Assertion: Every wire is like a spring, whose spring constant ,`K prop 1/l`, where l is length of wire.
Reason : It follows from the relation
`K = (YA)/(l)`

Options

A. (a) If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.
B. (b) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
C. If Assertion is true, but the Reason is false.
D. If Assertion is false but the Reason is true.

Answer

A