A Woman (Mass = 70 Kg) Steps into an Elevator $2$

Multiple Choice

A woman (mass = 70 kg) steps into an elevator. The elevator accelerates upward at 3 m/s $2$ . The force that the floor of the elevator exerts on the woman is

A) 700 N.
B) 900 N.
C) 980 N.
D) 1100 N.