The Changes in the Plasma Concentration of Most of the Hormones

Multiple Choice

The changes in the plasma concentration of most of the hormones during maximal exercise would stimulate fatty acid mobilization from adipose tissue. The plasma-free fatty acid concentration, however, actually decreases. Why does this occur?

A) Fatty acid supply is depleted.
B) Hormones are ineffective in maximal work.
C) Lactic acid interferes with fatty acid mobilization.
D) High insulin levels secreted during maximal exercise interfere with fatty acid mobilization.