B is 20% efficient than A. B started the work & do it for x days. And then B is replaced by A. And A completed the remaining work in x+8 days. Ratio of work done by A & B is 3:2. In how many day A & B working together to complete the whole work?

Options

A. `120//12`
B. 150/11 days
C. 140/13 days
D. 100/33 days