Assertion (A): In a fluid coupling, hydrodynamic transmission is done by pump and turbine.
Reason (R): Fluid coupling is a type of machine in which fluid is used as a means of energy transfer
(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