[A]: Osteoporosis is a bone disorder that re- sults from the loss of calcium and phosphate from the bone matrix.
[R]: In osteoporosis, osteoblast activity is de- creased and new bone is deposited more slowly than it is removed by osteoclasts.
A. If both A and R are true and R is the correct explanation of A
B. If both A and R are true but R is not the correct explanation of A
C. If A is true and R is false
D. If both A and R are false