Which Neuropeptide Is Associated with Each of the Following Processes

Which neuropeptide is associated with each of the following processes? Select oxytocin, vasopressin, both, or neither.
A. Acts through a G-protein-coupled receptor in peripheral tissues
B. Regulates blood pressure homeostasis in both sexes
C. Promotes milk production in females
D. Promotes partner preference in male meadow voles
E. Promotes partner preference in male prairie voles
F. Is released from the posterior pituitary into the bloodstream