The Binding of Hormone to G-Protein Coupled Receptor Stimulates the Sequence

The binding of hormone to G-protein coupled receptor stimulates the sequence:
A.binding of Gα (GTP) activates adenylyl cyclase
B.Gα(GTP) dissociates and re-associates with Gβγ
C.rapid exchange of GDP for GTP on Gα
D.GTPase of Gα hydrolyzes GTP to GDP
E.Gα dissociates from Gβγ

A) B, C, A, D, E
B) C, E, A, D, B
C) C, E, B, D, A
D) D, A, C, E, B
E) E, A, D, B, C