Osteoporosis Can Result from Excessive Production of Receptor Activator of Nuclear

Multiple Choice

Osteoporosis can result from excessive production of receptor activator of nuclear factor $\kappa$ light-chain enhancer of activated B cells (RANK) ligand (RANKL) by osteoblasts.A molecule that directly inhibits RANKL and protects bones from osteoclast overactivity is:

A) PTH.
B) Osteoprotegerin.
C) Alkaline phosphatase.
D) Osteoid.
E) RANK.