Assertion:.Hormone calcitonin has antagonistic effect to that of parathormone.
Calcitonin decreases blood calcium Assertion: level while parathormone increases blood calcium level.
A. If both assertion and reason are true and the reason is a correct explanation of the assertion.
B. If both assertion and reason are true but reason is not a correct explanation of the assertion.
C. If the assertion is true but reason is false.
D. If both the assertion and reason are false.