The profit earned by selling an article for $ 832 is equal to the loss incurred when the same article is sold for $ 448. What should be the sale price for making 30% profit? Choose the correct choice from the following options:
A) $ 480 B) $ 450 C) $ 960 D) $ 832 E) $ 660

Rationale: "let c . p . = $ x . then , 832 - x = x - 448 2 x = 1280 = > x = 640 required s . p . = 130 % of $ 640 = $ 832 . d"
Answer: D