(A]: Cotton is a filling fibre only.
[R]: Cotton is a bast fibre

Options

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

Answer

To solve the question regarding the assertion and reason about cotton, we will analyze both statements step by step.

### Step 1: Analyze the Assertion
The assertion states: "Cotton is a filling fiber only."
- Cotton is indeed used as a filling material, for example, in pillows and cushions. However, this statement claims that it is "only" a filling fiber. This is misleading because cotton has multiple uses beyond just being a filling fiber. It is widely used in the textile industry for making clothing, bed linens, and other fabric products.

### Step 2: Analyze the Reason
The reason states: "Cotton is a bast fiber."
- This statement is incorrect. Cotton is classified as a seed fiber, not a bast fiber. Bast fibers come from the inner bark of plants (like flax or jute), while cotton fibers are derived from the seeds of the cotton plant.

### Step 3: Conclusion
Since both the assertion and the reason are incorrect, we conclude that:
- Assertion (A) is false.
- Reason (R) is false.

Therefore, the correct answer is that both A and R are false.

### Final Answer
Both the assertion and the reason are false.

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