Abhishek and Deepanshi undertake to do a piece of work for ₹1,000. Abhishek alone
can do it in 5 days and Deepanshi alone can do it in 10 days. With the help of Chitransh, they finish it in 2 days. How much should Chitransh be paid for his contribution?
A₹200
B₹500
C₹300
D₹400