Two skeletal system processes that are constantly taking place include the resorption of existing bone and formation of new bone. The bone disorder that results from low bone mineral density is osteoporosis and involves an imbalance between these two processes. Which of the following is not likely to cause osteoporosis?

A.
excess bone resorption and inadequate formation
B.
excess bone formation and inadequate resorption
C.
poor calcium absorption into bone
D.
excess calcium release into blood