[A]: Oxygenator acts as artificial kidney.
[R]: Oxygenator machine completely takes over the functions of heart as well as lung.

Options

A. If both A and R are true and R is the correct explanation of A
B. If both A and R are true but R is not the correct explanation of A
C. If A is true and R is false
D. If both A and R are false

Answer

To analyze the statements regarding the oxygenator and its functions, we can break down the question step by step:

### Step 1: Understand the assertion
- The assertion states: "Oxygenator acts as artificial kidney."
- An oxygenator is a device used in medical settings, particularly during surgeries, to oxygenate the blood and remove carbon dioxide. It mimics the function of the lungs, not the kidneys.

### Step 2: Understand the reason
- The reason states: "Oxygenator machine completely takes over the functions of heart as well as lung."
- While it is true that an oxygenator assists in oxygenating blood and can take over some functions of the lungs, it does not take over the functions of the heart. The heart is responsible for pumping blood throughout the body.

### Step 3: Evaluate the truth of the statements
- Since the assertion is incorrect (an oxygenator does not act as an artificial kidney), and the reason is partially true (it does assist with lung function but not heart function), we can conclude that:
- The assertion is false.
- The reason is misleading as it implies that the oxygenator takes over the heart's function.

### Step 4: Final conclusion
- Since both the assertion and the reason are incorrect in the context of their relationship, the correct answer is that both statements are false.

### Summary of the Solution:
- **Assertion**: False (Oxygenator does not act as an artificial kidney; dialysis does.)
- **Reason**: False (Oxygenator does not take over the heart's function; it assists with lung function.)