Assertion`: -` `Ca^(++)` play an important role in the muscle contraction.
Reason`:-` Calcium bind with a subunit of troponin on actin filaments and thereby remove the masking of active sites for myosin.
A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion .
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are false.