Assertion (A) compound containing -CHO group are easily oxidised to corresponsing carboxylic acids
Reason (R) : Carboxylic acids can be reduced to alcohols by treatement with `LiAlH_(4)`

Options

A. If both assetion and reason are CORRECT, and reason is the CORRECT explanation of the assertion
B. If both assertion and reason are CORRECT, but reason is NOT the CORRECT explanation of the assertion
C. If assertion is CORRECT but reason is INCORRECT
D. If assertion is INCORRECT but reason is CORRECT

Explanation

To solve the question, we need to analyze the assertion and the reason given, and determine their correctness and relationship.

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**:
- The assertion states that compounds containing the -CHO group (aldehydes) are easily oxidized to the corresponding carboxylic acids.
- This is true because aldehydes can be oxidized to carboxylic acids using various oxidizing agents, including mild ones like Tollens' reagent (Ag(NH3)2^+).

2. **Understanding the Reason (R)**:
- The reason states that carboxylic acids can be reduced to alcohols by treatment with lithium aluminum hydride (LiAlH4).
- This statement is also true. Lithium aluminum hydride is a strong reducing agent that can reduce carboxylic acids to their corresponding alcohols.

3. **Analyzing the Relationship**:
- While both statements are correct, we need to determine if the reason provides a valid explanation for the assertion.
- The assertion discusses the oxidation of aldehydes to carboxylic acids, while the reason discusses the reduction of carboxylic acids to alcohols. These are two separate processes and do not explain each other.

4. **Conclusion**:
- Both the assertion and the reason are correct, but the reason does not explain the assertion. Therefore, the correct answer is that both statements are true, but the reason is not the correct explanation for the assertion.

### Final Answer:
- Both the assertion and reason are correct, but the reason is not the correct explanation for the assertion.