If 2a = 4b = 10, then 40ab =
Choose the correct choice from the following answers:
A) 50	B) 100	C) 250	D) 450	E) 500

Rationale: 2 a * 4 b = 10 * 10 = 100 8 ab = 100 i . e . 40 ab = 500 answer : option e
Answer: E