A shopkeeper sold 50articles at the cost price of 60 articles. Then find the profit% or lost% Choose the correct choice from the following options:  A) 20 %  B) 22 %  C) 25 %  D) 30 %  E) 35 %

Rationale: "here 50 articles selling price = 60 articles cost price so the difference = 60 - 50 = 10 % of profit = 10 * 100 / 50 = 20 % correct option is a"
Answer: A