Find the annual income derived by investing $ 6800 in 10% stock at 136.  Choose the correct choice from the following answers:	A) 550	B) 500	C) 250	D) 300	E) 400

Rationale: "by investing $ 136 , income obtained = $ 10 . by investing $ 6800 , income obtained = $ [ ( 10 / 136 ) * 6800 ] = $ 500 . answer b ."
Answer: B