Arun & Bijay can make paintings in 3 days, Bijay & Chandan can make those paintings in 5 days. If Arun, Bijay & Chandan together can finish the work in 2 days, then Arun & Chandan together will do it in ________ days.

A

8/7 days

B

5 days

C

15/7 days

D

4/3 days