The sum of all possible products taken two at a time out of the numbers \(\pm 1, \pm 2, \pm 3, \pm 4, \pm 5\) is

The sum of all possible products taken two at a time out of the number

1.	The sum of all possible products taken two at a time out of the numbers \(\pm 1, \pm 2, \pm 3, \pm 4, \pm 5\) is
A.	0
B.	-30
C.	-55
D.	55
Answer» D. 55