Trigonometric Functions & Equations

Answer the following by appropriately matching the lists based on the information given in the paragraph
Let f(x)=sin(πcosx) and g(x)=cos(2πsinx) be two functions defined for x > 0.Define the following sets whose elements are written in the increasing order :
List – I contains the sets X, Y, Z and W. List – II contains some information regarding these sets.

List I	List II
I) X	P) ⊇{ π 2 , 3π 2 ,4π,7π}
II) Y	Q) an arithmetic progression
III)Z	R) NOT an arithmetic progression
IV) W	S) ⊇{ π 6 , 7π 6 , 13π 6 }
	T) ⊇{ π 2 , 2π 2 ,π}
	U) ⊇{ π 6 , 3π 4 }

Which of the following is the only CORRECT combination?