assertion (a): bohr postulated that the electrons in stationary orbits around the nucleus do not radiate.

reason (r): according to classical physics, all moving electrons radiate

(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.