<prompt> Which of the following statements about Pseudohypoprathyroidismistrue-Caused by Gain of!ftmction inherited mutation in Gsa subunitDecreased formation of cyclic GMP is observedDecreased formation of Inositol triphosphate is observedDecreased formation of c-AMP is observed  <response>: decreased urinary cyclic AMP responses to PTH , presumably with a post -GS alpha defect in adenyl cyclase stimulation Harrison 17 pg 2394 