There were 1200 students in a hostel. If the number of students is increased by 300, then the expenses of the mess increase by Rs. 5,000 per day, while the average expenditure per head diminishes by Rs. 5. The original expenditure of the mess, per day. is:

Options

A. Rs. 52,000
B. Rs. 45,000
C. Rs. 50,000
D. Rs. 55,000