X can do a certain work in 40 hours. Y is 25% more efficient than X, and Z is 28% more efficient than Y. Working together, X. Y and Z will complete the same work in:

A

$$\frac{800}{77}$$ hours

B

$$\frac{160}{9}$$ hours

C

$$\frac{400}{11}$$ hours

D

$$\frac{200}{13}$$ hours