A spring balance and a physical balance are kept in a lift. In these balance equal masses are placed. If now the lift starts moving upward with constant acceleration, then.

Options

A. the reading of spring balance will increase and the equilibrium position of the physical balance will disturb
B. the reading of spring balance will remain unchanged and physical balance will remain in equilibrium
C. the reading of spring balance will decrease and physical balance will remain in equilibrium
D. the reading of spring balance will increase