A person can row at 10 km/hr in still water. The speed of the stream is $$1\frac{1}{9}$$ m/sec. The time (in hours) taken by him to row a distance of 72 km upstream is:

A

$$5\frac{1}{7}$$

B

$$10\frac{2}{7}$$

C

$$10$$

D

$$12$$