With respect to movements in the given animals, select the incorrect statement out of the following.
	 
 	
A	Animal Q moves by contraction and expansion of its muscles.
B	Animal P bears three pairs of jointed legs on its body which help in its movement.
C	Animal R moves in water with the help of its fins and tail.
D	Animal P moves with the help of a muscular organ, which makes wave-like movements
Is snail make wave like movement????????????????????