A, B and C invested Rs.6300, Rs.4200 and Rs.10500 respectively, in a partnership business. Find the share of A in profit of Rs.12200 after a year?  Choose the correct choice from the following answers.
A) 3660
B) 2881
C) 2887
D) 9977
E) 2212

Rationale: "6300 : 4200 : 10500 3 : 2 : 5 3 / 10 * 12200 = 3660 . answer : a"
Answer: A