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Assertion : Calcium concentration in pla...

Assertion : Calcium concentration in plasma is regulated at about 100 mg `L^(-1)`, and it is maintained by calcitonin and parathyroid hormone.
Reason : The main roles of Ca are observed in the absorption of light in plants for photosynthesis and as a cofactor in the phosphate transfer of enzymes.

A

Both assertion and reason are true and reason is the correct explanation of assertion

B

Both assertion and reason are true and reason is not the correct explanation of assertion

C

Assertion is true and reason is false

D

Both assertion and reason are false

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