You Work as Research Director for a Pharmaceutical Company

You work as research director for a pharmaceutical company.One of your tasks is the development of new antihypertensive (blood pressure-lowering) drugs.The most promising drug would be one that:

A) Inhibits the endothelial nitric oxide synthase.
B) Opens voltage-gated calcium channels in the plasma membrane of vascular smooth muscle cells.
C) Blocks voltage-gated calcium channels in the plasma membrane of endothelial cells but not vascular smooth muscle cells.
D) Inhibits the Gs protein in vascular smooth muscle cells.
E) Prevents the degradation of cAMP in vascular smooth muscle cells but not other cells in the body.