A: Cardiac muscles are involuntary.
R: Striated muscles are involuntary.

Options

A. IF both Assertion & Reason are true and the reason is the correct explanation of the assertion , then mark
B. If Both Assertion & Reason are true but the reason is not the correct exlanation of the assertion then mark
C. IF Assertion is true statement but Reason is false then mark
D. If both Assertion and Reason are false statements then joint

Answer

To solve the question regarding the assertion and reason about cardiac muscles and striated muscles, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Cardiac muscles are involuntary."
- Cardiac muscles are indeed involuntary muscles, meaning they operate without conscious control. They are responsible for the heart's pumping action and function continuously throughout a person's life.

2. **Understanding the Reason**:
- The reason states that "Striated muscles are involuntary."
- This statement is incorrect. Striated muscles refer to skeletal muscles, which are under voluntary control, meaning they can be consciously controlled by the individual.

3. **Evaluating the Truth of Each Statement**:
- The assertion is true: Cardiac muscles are involuntary.
- The reason is false: Striated muscles are not involuntary; they are voluntary.

4. **Determining the Relationship**:
- Since the assertion is true and the reason is false, the reason does not provide a correct explanation for the assertion.

5. **Choosing the Correct Option**:
- Based on the evaluation, the correct option is that the assertion is true, but the reason is false.

### Final Answer:
The correct option is C: Assertion is true, but reason is false.

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