A River 100 Mile Wide Flows with a Constant Speed of 1

Multiple Choice

A river 1.00 mile wide flows with a constant speed of 1.00 mi/h.A woman leaves from a point on the river bank.The woman rows a boat 1.00 mi directly upstream and returns to the starting point.Her speed in still water is 2.00 mi/h.The travel time for the woman is

A) 2.00 h.
B) 1.15 h.
C) 1.00 h.
D) 1.33 h.
E) 0.67 h.