Which of the following represent saponification reaction?

Options

A. `CH_(3)COONa+NaOHoverset(CaO)rarr+Na_(2)CO_(3)`
B. `CH_(3)COOH+C_(2)H_(5)OHoverset(H_(2)SO_(4))rarrCH_(3)COOC_(2)H_(5)+H_(2)O`
C. `2CH_(3)COOH+2Nararr2CH_(3)COONa+H_(2)`
D. `CH_(3)COOC_(2)H_(5)+NaOHrarrCH_(3)COONa+C_(2)H_(5)OH`

Explanation

To determine which of the given options represents a saponification reaction, we need to understand what a saponification reaction is.

### Step-by-Step Solution:

1. **Definition of Saponification**:
- Saponification is a chemical reaction that involves the hydrolysis of an ester in the presence of a base (usually sodium hydroxide, NaOH) to produce an alcohol and a soap (which is a salt of the fatty acid).

2. **Identify the Reactants**:
- For a reaction to be classified as saponification, it must involve an ester as one of the reactants and a strong base (like NaOH).

3. **Analyze the Given Options**:
- Look at each option provided in the question. We need to find one that shows an ester reacting with a base.
- For example, if one of the options is:
- **Option 1**: CH3COOCH2CH3 + NaOH → CH3COONa + CH3CH2OH
- This shows an ester (ethyl acetate) reacting with sodium hydroxide, which is a classic example of saponification.

4. **Select the Correct Option**:
- After analyzing all options, the one that shows an ester reacting with a base (like NaOH) to produce a salt and an alcohol is the correct representation of a saponification reaction.

5. **Conclusion**:
- Based on the analysis, select the option that fits the criteria of saponification.

### Final Answer:
- The correct option representing a saponification reaction is the one that shows the reaction of an ester with a base, producing a salt and an alcohol.