If xa = yb = zc and y2 = zx, then the value of is________.
(A) b/2
(B) c/2
(C) 2/b
(D) 2a
If xa = yb = zc and y2 = zx, then the value of is________.
(A) b/2
(B) c/2
(C) 2/b
(D) 2a