Assertion (A): For a fully developed laminar flow through a pipe, velocity distribution across any section is parabolic in shape.
Reason (R): The shear stress distribution from the centre line of the pipe up to the pipe surface increases linearly.
(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