A started a business with Rs. 15000, after two months B joined the business with Rs. 12000 and after two months of B the third person C joined the business with Rs. 10000. The total profit share after 1 year is Rs. 5700. What is the profit share of A?
1
Rs. 2700
2
Rs. 1800
3
Rs. 1200
4
Rs. 3000