Boat&stream problem

Speed of a boat in standing water is 14 kmph and the speed of the stream is 1.2 kmph. A man rows to a place at a distance of 4864 km and come back to the starting point. The total time taken by him is::

a) 700 hrs                                                           b) 300 hrs

c) 1400 hrs                                                         d) 1010 hrs

Watch this space for answer in a week.