If x = (all prime factors of 44) and y = (all prime factors of 60), the elements of X ∪ Y and X ∩ Y respectively are

A.
(2, 4, 3, 5, 11) and (4) 
B.
(4, 3, 5, 11) and (3, 4) 
C.
(2, 5, 11) and (2) 
D.
(2, 3, 5, 11) and (2)
Correct Answer: Option D
Explanation
x = (all prime factors of 44) and y = (all prime factors of 60)
∴ x = (2, 11), y = (2, 3, 5)
X ∪ Y = (2, 3, 5, 11),
X ∩ Y = (2)