Which of the following BEST explains how cyclic AMP can cause so many different intracellular responses in a mammalian cell:

W) it is produced in large quantities

X) it migrates to the DNA where it binds to a variety of histones

Y) it activates a wide variety of specific protein kinases

Z) it prevents the activation of other hormonal signals
Y) IT ACTIVATES A WIDE VARIETY OF SPECIFIC PROTEIN KINASES