A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
E) If the assertion is false but reason is true
Correct Answer: C
Solution :
Shell of cuttle fish or cuttle bone, is a familiar object of the sea shore. It is rather soft and spongy. Being light, it floats in water, and during monsoon, these bones are drifted ashore in such great numbers that they have been named as the sea-foam. It is given as a bill sharpener as well as a source of calcium to caged birds.
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