Ram covers a distance in 8 hours and Mohan covers the same distance in 4 hours. It speed of Mohan is 10 km/hr more than Ram, then which of the following statements is/are correct?
I. Speed of Mohan is 20 km/hr.
II. Sum of their speed is 30 km/hr.

A

Neither I nor II

B

Both I and II

C

Only II

D

Only I