A can do a piece of work in 8 days while B alone can do it in 12 days. They work together for 4 days and the remaining work is completed by C alone in 4 days. They are paid Rs. 7,200 for the completion of the entire work. The earnings of A, B and C, respectively, are:
1
Rs. 2,400, Rs. 2,400, Rs. 2,400
2
Rs. 3,000, Rs. 3,000, Rs. 1,200
3
Rs. 4,000, Rs. 2,400, Rs. 800
4
Rs. 3,600, Rs. 2,400, Rs. 1,200