Muscular Weakness Tends to Develop in Old Age for All

Multiple Choice

Muscular weakness tends to develop in old age for all of the following reasons except

A) aged muscle has less glycogen, myoglobin, and creatine phosphate.
B) there are fewer motor neurons in the spinal cord.
C) aged muscle fibers have fewer myofibrils.
D) there are fewer and smaller mitochondria.
E) myocytes do not synthesize myosin anymore.