Which of the following is NOT a part of the sequence involved with the binding of hormone to a G protein-coupled receptor?

A)G_α(GTP)dissociates and re-associates with G_βγ.
B)The second messenger PKA is produced.
C)GTPase of G_α hydrolyzes GTP to GDP.
D)Binding of G_α (GTP)activates adenylyl cyclase.