What profit percent is made by selling an article at a certain price, if by selling at 4/5rd of that price, there would be a loss of 20%? Choose the correct choice from the following choices:
A) 0 % B) 29 % C) 70 % D) 27 % E) 28 %

Rationale: "sp 2 = 4 / 5 sp 1 cp = 100 sp 2 = 80 4 / 5 sp 1 = 80 sp 1 = 100 100 - - - 100 = > 0 % answer : a"
Answer: A