If X1, X2, X3, ... Xn, be n observations having arithmetic mean and if Y =4X± 2, then is equal to:

If X1, X2, X3, ... Xn, be n observations having arithmetic mean and if

1.	If X1, X2, X3, ... Xn, be n observations having arithmetic mean and if Y =4X± 2, then is equal to:
A.	4X
B.	4
C.	4 ± 2
D.	4 ± 2
Answer» D. 4 ± 2