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.12300 after a year?  Choose the most appropriate option.
A) 3630
B) 3690
C) 2887
D) 9977
E) 2212
6300:4200:10500   3:2:5   3/10 * 12300= 
<gadget id="calculator">3/10 * 12300</gadget>
<output>3_690</output>
3690.Answer: 3690
<result>B</result>
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.12300 after a year?