Complete the sentence correctly. Parathyroid hormone

Q. Complete the sentence correctly. Parathyroid hormone:

A.            is produced by the parafollicular cells of the thyroid gland

B.            decreases the concentration of Ca ++ in the blood

C.            releases Ca ++ from the sarcoplasmic reticulum

D.            M increases the concentration of Ca ++ in the blood.

Answer: M increases the concentration of Ca ++ in the blood.