Consider the following four statements and select the correct option stating which ones are true (T) and which ones are false (F).
(i) The stomach has the lowest pH.
(ii) The liver contains lipid emulsifier
(iii) Large intestine secretes many enzymes.
(iv) All proteases function in the lumen of small intestine.

Options

A. T F T F
B. F T F T
C. F F T T
D. T T F F

Explanation

To determine which of the four statements are true (T) and which are false (F), we will analyze each statement one by one.

### Step 1: Analyze Statement (i)
**Statement:** The stomach has the lowest pH.
**Analysis:** The stomach secretes hydrochloric acid (HCl), which creates a highly acidic environment with a pH typically ranging from 1.2 to 1.5. This is indeed the lowest pH in the digestive system.
**Conclusion:** This statement is **True (T)**.

### Step 2: Analyze Statement (ii)
**Statement:** The liver contains lipid emulsifier.
**Analysis:** The liver produces bile, which contains bile salts that act as lipid emulsifiers. These emulsifiers help in the digestion and absorption of fats.
**Conclusion:** This statement is **True (T)**.

### Step 3: Analyze Statement (iii)
**Statement:** Large intestine secretes many enzymes.
**Analysis:** The large intestine primarily absorbs water and electrolytes and does not secrete digestive enzymes like the stomach or small intestine.
**Conclusion:** This statement is **False (F)**.

### Step 4: Analyze Statement (iv)
**Statement:** All proteases function in the lumen of the small intestine.
**Analysis:** Proteases are enzymes that break down proteins. While many proteases do function in the small intestine, some proteases (like pepsin) function in the stomach. Therefore, the statement is misleading as it implies that all proteases only function in the small intestine.
**Conclusion:** This statement is **False (F)**.

### Final Summary of Statements:
- (i) True (T)
- (ii) True (T)
- (iii) False (F)
- (iv) False (F)

### Correct Option:
The correct option that matches the analysis is: **TTFF**.

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