Find the annual income derived by investing $ 6800 in 20% stock at 136.  Choose the correct choice from the following options: A) 550 B) 1000 C) 2500 D) 300 E) 4000

Rationale: "by investing $ 136 , income obtained = $ 20 . by investing $ 6800 , income obtained = $ [ ( 20 / 136 ) * 6800 ] = $ 1000 . answer b ."
Answer: B