Find the annual income derived by investing $ 6800 in 50% stock at 136. Pick one.
A) 550	B) 2500	C) 250	D) 3000	E) 400

Rationale: "by investing $ 136 , income obtained = $ 50 . by investing $ 6800 , income obtained = $ [ ( 50 / 136 ) * 6800 ] = $ 2500 . answer b ."
Answer: B