Which expression is equivalent to −12+(−45)+31 and includes the correct justification for the equivalence?
A
−12+(−45)+1555 by the additive inverse property
B
−12+31+(−45) by the commutative property
C
(−45)+(−12)+31 by the associative property
D
−12+31+(−0.8) because the opposite of a sum is the sum of its opposites.
