Assertion (A): In the boundary layer concept, the shear stress at the outer edge of the layer is considered to be zero.
Reason (R): Local velocity is almost equal to velocity in potential flow.
(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