Captopril (A Drug Derived from the Venom of the Pit

Captopril (a drug derived from the venom of the pit viper) interferes with the production of angiotensin, which is a potent vasoconstrictor. It is used clinically to treat high blood pressure. Given its antiangiotensin activity, can you explain why captopril reduces blood pressure?

A) It causes a decrease in the resistance to blood flow.
B) It causes an increase in the resistance to blood flow.
C) It increases blood volume.
D) It blocks stimulation of the cardiovascular system by the parasympathetic nervous system.
E) It blocks cardiac stimulation by the sympathetic nervous system.