P and Q work together on a task for 5 days. They then leave and rest of the task is done by R in just 2 days. All the three together are paid Rs. 450. What will be R’s share out of the payment if P alone could do the task in 10 days and Q alone can do the task alone in 15 days?

• A. Rs. 100
• B. Rs. 75
• C. Rs. 225
• D. Rs. 50