If x = 5 y=4 z=3 then which of the following is true? (I) x+y+z = 11 (II) x+y-z = -6 (III) x+Y+z = 12 (IV) -x+y-z = -4

If x = 5 y=4 z=3 then which of the following is true? (I) x+y+z = 11 (

1.	If x = 5 y=4 z=3 then which of the following is true? (I) x+y+z = 11 (II) x+y-z = -6 (III) x+Y+z = 12 (IV) -x+y-z = -4
A.	I and II
B.	III and IV
C.	All
D.	None
Answer» C. All