P, Q and R secured 45%, 50% and 60% marks respectively in Biology. M’s marks in Biology is 12.5 more than P’s marks and 4 less than R’s marks. Find out the individual marks of four students._x005F_x000D_  _x005F_x000D_ A. For the students, total marks obtained for Biology is 311.5.B. Total of M’s and P’s marks in Biology is 147.5.C. R has obtained 84 marks.

• A. Only C
• B. Only A & B
• C. All are required
• D. None of the statements is required