Two particles are projected simultaneously with different speed from the same point as shown in Figure. Select incorrect statement.

For (a), Relative acceleration = 0For (b), Relative velocity = constant (∵ a = 0)For (c), Relative velocity in vertical direction = 4sin53°- 3sin37≠0For (d), Relative velocity in horizontal direction. = 4cos53° - 3cos37° = 0