After the Activation of a G-Protein,the Sequence of Signalling Events

Multiple Choice

After the activation of a G-protein,the sequence of signalling events consists of:

A) effector enzyme, second messenger, protein kinase, substrate protein.
B) second messenger, effector enzyme, protein kinase substrate protein.
C) effector enzyme, protein kinase, second messenger, substrate protein.
D) substrate protein, protein kinase, second messenger, effector enzyme.