Assertion : A screw gauge having a smaller value of pitch has greater accuracy.
Reason : The least count of screw gauge is directly proportional to the number of divisions on circular scale.

Options

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