Action of M, cholinergic receptors?

Action of M, cholinergic receptors ?
a) Skeletal muscle contraction
b) Acid secretion in stomach
c) Decreased heart rate
d) Salivation and lacrimation
Correct Answer - C
Ans. C. Decreased heart rate
Effect of cholinergic system on heart (e.g. decreased heart rate) is
through M2 receptors.