A Woman Who Weighs 700 N Steps onto a Scale $2$

Multiple Choice

A woman who weighs 700 N steps onto a scale that is in an elevator. The elevator begins to accelerate. The woman now weighs 500 N (according to the scale) . The acceleration of the elevator is

A) 2.8 m/s $2$ downward.
B) 2.8 m/s $2$ upward.
C) 4.2 m/s $2$ upward.
D) 4.2 m/s $2$ downward.