The following question has three statements. Study the question and the statements and decide which of the statement (s) is/are necessary to answer the question.

What is the total Profit percentage for Ram?

I) Ram buys two ovens at Rs. 4000 each.

II) Ram sells the oven and the ratio between the selling price of two ovens is 24 : 25.

III) The difference between the profit earned by Ram on two ovens is Rs. 200.