53.Which of the following statements pertaining to an SN2 reaction are true? 1.The rate of reaction is independent of the concertration of the nucleophile.2.The nucleophile attacks carbon on the side of the molecule opposite the group being displaced.3.The reaction proceeds with simultaneous bond formation and bond rupture.4.Partial racemization of an optically active substrate results. (A)1,4 (B)1,3,4 (C)2,3 (D)1,3 (E)All