Given below is a question followed by three statements. Identify the statements that are necessary to answer the question.

Question: What is the percentage profit gained by a vendor when he sells an article?

Statements:

(i) He gives a 10% discount on the marked price.

(ii) He would have earned 25% profit if he did not give any discount.

(iii) The cost price of the article is Rs. 8000.

Choose the correct option from those given below :