If x, y, and z are positive integers, and 2x = 5y = 8z, then the least possible value of x + y + z is  Choose the correct option:
A) 15	B) 28	C) 33	D) 42	E) 60

Rationale: "take lcm of 2,5 and 8 = 40 now 2 x = 40 = > x = 20 5 y = 40 = > y = 8 8 z = 40 = > z = 5 20 + 8 + 5 = 33 . option c ."
Answer: C