A, B and C can separately do a work in 6, 10 and 15 days respectively. They started to work together but C left after 2 days. In how many days will the remaining work be finished?

A

$$1\frac{2}{4}$$

B

$$1\frac{1}{4}$$

C

$$1\frac{1}{8}$$

D

$$2\frac{7}{4}$$