Train 'A' running at speed of `72 km//hr` crosses a platform of length same as that of the train in 34 sec. If train B, which is 160 meters long crosses the same platform in 20 sec, then find speed of train B (in `km//hr`)?

Options

A. `54 km//hr`
B. `90 km//hr`
C. `84 km//hr`
D. `72 km//hr`

Answer

B