Alternate name of Krebs' cycle is

Options

A. TCA cycle
B. citric acid cycle
C. both (a) and (b)
D. none of these

Explanation

### Step-by-Step Solution

1. **Understanding the Question**: The question asks for the alternate name of the Krebs' cycle. The Krebs cycle is a crucial metabolic pathway in cellular respiration.

2. **Identifying the Krebs Cycle**: The Krebs cycle is also known as the citric acid cycle. This is because citric acid (or citrate) is the first product formed in the cycle when acetyl-CoA combines with oxaloacetate.

3. **Another Name for the Krebs Cycle**: In addition to being called the citric acid cycle, the Krebs cycle is also referred to as the TCA cycle, which stands for Tricarboxylic Acid cycle. This name is derived from the three carboxylic acid groups present in citric acid.

4. **Conclusion**: Therefore, the Krebs cycle has two alternate names: the TCA cycle and the citric acid cycle. The correct answer to the question is "both A and B".

### Final Answer
The alternate names of the Krebs' cycle are the TCA cycle and the citric acid cycle (both A and B).

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