S: protein carry out many functions in living organisms
A: all enzymes are made up of proteins
R: they are responsible for maintenance of proper rates of biochemical reaction in cell
(A) S&A are true but R is false
(B)S,A&R are true and R&A are the correct explanation of S
(C) S is true but A&R both are false
(D)S,A&R are true but R&A are not the correct explanation of S
