Assertion (A): After the first sexual intercourse, the Hymen breaks up.
Reason (B): The presence of an intact hymen is an indicator of virginity.

Options

A. Both A and R are true and R is the correct ex planation of A
B. Both A and R are true but R is not the correct explanation of A
C. A is true but R is false
D. A is false but R is true

Explanation

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**: The assertion states that "After the first sexual intercourse, the hymen breaks up." This is generally true as the hymen, which is a thin membrane surrounding the vaginal opening, can be stretched or torn during sexual intercourse.

2. **Understanding the Reason (B)**: The reason states that "The presence of an intact hymen is an indicator of virginity." This statement is misleading. While traditionally, an intact hymen has been associated with virginity, it is not a definitive indicator. The hymen can break due to various reasons other than sexual intercourse, such as physical activities (sports, swimming) or medical examinations.

3. **Evaluating the Relationship Between Assertion and Reason**: The assertion is true, but the reason is false. The reason does not accurately support the assertion because the state of the hymen is not a reliable indicator of virginity.

4. **Conclusion**: Therefore, the correct evaluation is that the assertion is true while the reason is false.

### Final Answer:
Assertion (A) is true, and Reason (B) is false.