When solving an equation, Emily's first step is shown below. Which property justifies
Emily's first step?

Original Equation:
(-3x² + 2) + 4 = − x² + 3
First Step:
(-3x² + 2) + 16 = -4x² + 12

A. commutative property of multiplication
B. associative property of multiplication
C. distributive property of multiplication over addition
D. multiplication property of equality