Assertion:Maltose is a reducing sugar , one molecule of which gives
two molecules of d-glucose on hydrolysis.
Reason: Maltose has a 1,4 `beta`-glycosidic linkage.

Options

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

Explanation

To solve the question regarding the assertion and reason about maltose, we will break it down into steps.

### Step-by-Step Solution:

1. **Understanding Maltose**:
- Maltose is a disaccharide composed of two glucose units.
- It is formed by the condensation of two glucose molecules.

2. **Assertion Analysis**:
- The assertion states that "Maltose is a reducing sugar, one molecule of which gives two molecules of D-glucose on hydrolysis."
- This is true because maltose can be hydrolyzed into two molecules of D-glucose. One of these glucose units is a reducing sugar, which means it has a free aldehyde group that can act as a reducing agent.

3. **Reason Analysis**:
- The reason states that "Maltose has a 1,4 beta-glycosidic linkage."
- This statement is incorrect. Maltose actually has an α(1→4) glycosidic linkage between the two glucose units. The first glucose unit is in the alpha configuration, and it connects to the fourth carbon of the second glucose unit.

4. **Conclusion**:
- Since the assertion is true and the reason is false, the correct relationship is that the assertion is correct, but the reason is not.

### Final Answer:
- The assertion is true, and the reason is false.