A sum of money is divided among A, B, C and D in the ratio of 3 : 4 : 9 : 10 respectively. If the share of C is Rs. 2580 more than the share of B, then what is the total amount A and D together ?

• A. s. 5676
• B. s. 6192
• C. s. 6708
• D. s. 7224
• E. one of these