Assertion : The speed of sound in a gas is not affected by change in pressure provided the temperature of the gas remains constant.
Reason : The speed of sound is inversely proportional to the square root of the density of the gas.
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not correct explanation of A
(c) A is true but R is false
(d) A and R are false
