A block `X` kept on an inclined surface just begins to slide if the inclination is `theta_(1)` The block is replaced by another block `Y` and it is found that it just begins to slide if the inclination is `theta_(2),(theta_(2) gt theta_(1))` Then .
A. Mass of `X =` mass of Y
B. Mass of `X lt` mass of `Y`
C. Mass of `X gt` mass of Y
D. All the three are possible .
