A and B started a business jointly A's investment was thrice the investment of B and the period of his investment was two times the period of investment of B. If B received Rs. 4000 as profit, then their total profit is ?	Choose the correct choice from the following answers:
A) 28029
B) 28000
C) 28001
D) 28012
E) 28129
Suppose B invested Rs. x for y months. Then, A invested Rs. 3x for 2y months.   So, A : B = (3x * 2y) : (x * y) = 6xy : xy = 6 : 1.   B's profit : Total profit = 1 : 7.   Let the total profit be Rs. x Then, 1/7 = 4000/x or x = 28000.   Answer: 28000
<result>B</result>
A and B started a business jointly A's investment was thrice the investment of B and the period of his investment was two times the period of investment of B. If B received Rs. 4000 as profit, then their total profit is ?