A River 100 M Wide Flows Due South at 1

Multiple Choice

A river 100 m wide flows due south at 1 m/s.A boat that goes 1 m/s relative to the water is pointed due east as it crosses from the west bank.The boat reaches the east bank

A) due east of where it started.
B) 141 m farther south than where it started.
C) 100 m farther south than where it started.
D) 100 m farther north than where it started.