Four different human body fluid samples were subjected to quantification of hydrogen ion concentration. `(mEq)/(L)` is the unit of measurement for hydrogen ion concentration. The results of the experiment were as follows:
Sample A: `1.6 xx 10^(2)` units Sample B : `4.5 xx 10^(-5)` units
Sample C:`1xx 10^(-3)` units Sample D : `3 xx 10^(-2)` units
Identity the samples in sequence from A to D.

Options

A. Gastric HCI, Venous blood, Intracellular Fluid, Urine
B. Venous blood, Intracellular Fluid, Gastric HCI, Urine
C. Urine, Gastric HCI, Venous blood, Intracellular Fluid
D. Intracellular Fluid, Urine Gastric HCI, Venous blood

Explanation

To solve the problem of identifying the samples from A to D based on their hydrogen ion concentration, we need to analyze the given values and relate them to the typical pH levels of human body fluids. Here's a step-by-step breakdown of the solution:

### Step 1: Understand the relationship between hydrogen ion concentration and pH
- The concentration of hydrogen ions \([H^+]\) is inversely proportional to pH. This means that a higher concentration of hydrogen ions corresponds to a lower pH value.

### Step 2: Analyze the given samples
- Sample A: \(1.6 \times 10^2\) mEq/L
- Sample B: \(4.5 \times 10^{-5}\) mEq/L
- Sample C: \(1 \times 10^{-3}\) mEq/L
- Sample D: \(3 \times 10^{-2}\) mEq/L

### Step 3: Convert the samples into a more comparable format
- Sample A: \(160\) mEq/L
- Sample B: \(0.000045\) mEq/L
- Sample C: \(0.001\) mEq/L
- Sample D: \(0.03\) mEq/L

### Step 4: Rank the samples based on hydrogen ion concentration
- The highest concentration is Sample A (160 mEq/L).
- The next highest is Sample D (0.03 mEq/L).
- Then Sample C (0.001 mEq/L).
- Finally, Sample B (0.000045 mEq/L).

### Step 5: Identify the corresponding body fluids
- Gastric HCl (stomach acid) has the highest hydrogen ion concentration, hence corresponds to Sample A.
- Venous blood has a moderate concentration, corresponding to Sample D.
- Intracellular fluid has a lower concentration, corresponding to Sample C.
- Urine has the lowest concentration, corresponding to Sample B.

### Step 6: Sequence the samples from A to D
Based on the analysis:
- Sample A: Gastric HCl
- Sample D: Venous Blood
- Sample C: Intracellular Fluid
- Sample B: Urine

### Final Sequence
Thus, the sequence from A to D is:
- A: Gastric HCl
- D: Venous Blood
- C: Intracellular Fluid
- B: Urine

### Answer
The identity of the samples in sequence from A to D is:
- A: Gastric HCl
- D: Venous Blood
- C: Intracellular Fluid
- B: Urine