An Adipose (Fat)cell Responds to the Presence of the Hormone

Multiple Choice

An adipose (fat) cell responds to the presence of the hormone epinephrine by increasing cytosolic cyclic AMP production,which leads to the catabolism of both glycogen and fat.What is the most likely explanation for this phenomenon?

A) Epinephrine is binding to two types of receptors in the plasma membrane.
B) The activated receptor complex stimulates production of two different second messengers.
C) Cyclic AMP directly activates enzymes that catabolize glycogen and fat.
D) Cyclic AMP-dependent protein kinase activates two kinds of enzymes.