A person of mass m is on the the floor of a lift. The lift is moving down with an acceleration 'a'. Then :
(a) the net force is acting in downward direction and is equal to mg
(b) the force mg must be greater than reaction force
(c ) the man appears to be lighter than his true weight by a factor (a/g)

Options

A. a, b, c are correct
B. b and c are correct
C. a and c are correct
D. only b is correct

Answer

B