In the following question a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :
Assertion (A): Cocaine are durg of abuse.
Reason (R): Cocaine interferes in the working of central nervous system.

Options

A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
C. Assertion (A) is true but reason (R) is false.
D. Assertion (A) is false but reason (R) is true.

Explanation

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

### Step 1: Analyze the Assertion (A)
The assertion states that "Cocaine is a drug of abuse."
- Cocaine is indeed classified as a drug of abuse. It is known for its addictive properties and potential for misuse.

### Step 2: Analyze the Reason (R)
The reason states that "Cocaine interferes in the working of the central nervous system."
- This statement is also true. Cocaine acts as a stimulant and affects the central nervous system by increasing the levels of dopamine, a neurotransmitter associated with pleasure and reward.

### Step 3: Determine the Relationship Between A and R
Now, we need to assess whether the reason correctly explains the assertion.
- The assertion is about cocaine being a drug of abuse, while the reason explains how cocaine affects the central nervous system. The interference with the central nervous system is indeed a reason why cocaine is considered a drug of abuse, as it leads to addiction and harmful effects.

### Step 4: Conclusion
Both the assertion and reason are correct, and the reason correctly explains the assertion. Therefore, the correct choice would be the first option: both assertion and reason are correct, and the reason explains the assertion.

### Final Answer
The correct choice is: **Both assertion and reason are correct, and the reason explains the assertion.**

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