Reena, Veena and Vimla can do a work in 4 h, 8 h and 12 h respectively. In how much time will they finish the work working together?

A

$$\frac{2}{11}$$ h

B

$$5 \frac{2}{11}$$ h

C

$$3 \frac{2}{11}$$ h

D

$$2 \frac{2}{11}$$ h