Assertion: some organisms break-down food material outside the body and then absorb it. reason: this parasitic nutritive strategy is used by a wide variety of organisms.
(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 the correct explanation of A.
(c ) A is true but R is false.
(d) A is false but R is true.