PLEASE HELP!!!
Expand!!!
A. 0 + 1 + 2 + 3 + 4+ 5
B.(-1) + (-2) + (-3) + (-4) + (-5) + (-6)
C. 0 + 1 + 2 + 3 + 4 + 5 + 6
D. 1 + 2 + 3 + 4 + 5 + 6
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