If the cost price of 20 articles is equal to the selling price of 16 articles, What is the percentage of profit or loss that the merchant makes?  Choose the correct choice from the following options:
A) 20 % loss
B) 25 % profit
C) 33.33 % loss
D) 30.33 % loss
E) none of these

Rationale: "explanation : let cost price of 1 article be re . 1 . therefore , cost price of 20 articles = rs . 20 . selling price of 16 articles = rs . 20 therefore , selling price of 20 articles is : - = > 20 / 16 × 20 = > 25 . therefore , profit = selling price - cost price . = > 25 − 20 = 5 . hence , the percentage of profit = profit x 100 / c . p . = > 5 / 20 × 100 . = > 25 % profit . answer : b"
Answer: B