A boat can travel 104 km downstream in 8 hours. If the speed of the stream is 2 km/h, then find in what time will it be able to cover 13 km upstream?

A

$$2\frac{2}{3}$$ hours

B

$$1\frac{4}{9}$$ hours

C

$$2\frac{1}{2}$$ hours

D

$$1\frac{2}{3}$$ hours