Let m be ann xn matrix with real entries such that ms = i. suppose that mv #v for any non zero vector v. then which of the following statements is/ are true? (a

Let M be ann xn matrix with real entries such that MS = I. Suppose that Mv #v for any non zero vector v. Then which of the following statements is/ are TRUE? (A) M has real cigenvalues (B) M + M- has real eigenvalues (C) n is divisible by 2 (D) n is divisible by 3