If the cost price of 18 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 option
A) 20 % loss B) 12.5 % 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 18 articles = rs . 18 . selling price of 16 articles = rs . 18 therefore , selling price of 18 articles is : - = > 18 / 16 ã — 18 = > 20.25 . therefore , profit = selling price - cost price . = > 20.25 â ˆ ’ 18 = 2.25 . hence , the percentage of profit = profit x 100 / c . p . = > 2.25 / 18 ã — 100 . = > 12.5 % profit . answer : b"
Answer: B