Q. If x, y, z are three sum of money such that y is the simple interest on x and z is the simple interest on y for the same time and at the same rate of interest, then what is the relation between x, y, z we have = ?

• (A) (x)^2 = xy
• (B) xyz = 1
• (C) (x)^2 = yz
• (D) (y)^2 = zx