A person standing oin the floor of an elevator drops as coin. The coin reaches the floor of the elevator in a time `t_1` if the elevator is stationary and in the `t_2` if it is moving uniformly. Then
A. `t_(1) = t_(2)`
B. `t_(1) lt t_(2)`
C. `t_(1) gt t_(2)`
D. `t_(1) lt t_(2)` or `t_(1) gt t_(2)` depending on whether the lift if going up or down.
