Which of the following depicts the correct order of steps involved in nitric oxide (NO) signaling to trigger smooth muscle relaxation?
Select one:
a.acetylcholine receptor activation → activation of NO synthetase → NO diffusion into neighboring cells → activation of guanylyl cyclase → cGMP production
b.receptor tyrosine kinase activation → activation of protein kinase A → activation of guanylyl cyclase
c.activation of guanylyl cyclase → cGMP production → activation of NO synthetase → NO diffusion into neighboring cells
d.acetylcholine receptor activation → activation of guanylyl cyclase → activation of NO synthetase → NO diffusion into neighboring cells → cGMP production
