Assertion (A): In a Rayleigh flow of subsonic compressible flow heating causes the Mach number to reach a maximum of 1; but the static temperature at this point is less than that due to frictional effects alone.
Reason (R): This is due to extra storage of heat energy as internal energy.
Codes:
(A) Both A and R are individually true and R is the correct explanation of A
(B) Both A and R are individually true but R is not the correct explanation of A
(C) A is true but R is false
(D) A is false but R is true