The following questions are accompanied by three statements A, B and C. You have to determine which statement(s) is/are necessary/sufficient to answer the question.
What is the cost price of an article?
A. Selling price of 6 articles is equal to the cost price of 7 such articles.
B. If the shopkeeper had allowed a discount of Rs.40 on the original selling price, he would have had 10% profit
C. If he had sold the article at `14 (2)/(7)%`ess than the original selling price, he would have had no profit or loss.

Options

A. Only A and B together
B. All the three together are not sufficient
C. Either A and B together or B and C together
D. Only B and C together

Answer

C