`(c-a)` will be equal to `10(a+c)` II. `10 a+2b` a. only I is true b. Only II is true c. Both I and II are true d. Both I and II are false

Let A, B, C, D be (not necessarily square) real matrices such that A^T=BCD: B^T=CDA; C^T=DAB and D^T=ABC. For the matrix S=ABCD, consider the two statements. I. S^3=S II. S^2=S^4 (A) II is true but not I (B) I is true but not II (C) both I and II are true (D) both I and II are false

Given n=1+x and x is product of four consecutive integers. Then which of the following is true? I n is an odd integer II. n is prime. III. n is a perfect square. Only I is correct (b) Only III is correct (c) Both I and II are correct (d) Both I and III are correct