Use a Commutative Property to Write an Equivalent Expression $\mathrm { m } \cdot \mathrm { s }$

Multiple Choice

Use a commutative property to write an equivalent expression.
-s.m

A) s+m
B) $\mathrm { m } \cdot \mathrm { s }$
C) $\frac { \mathrm { m } } { \mathrm { s } }$
D) $\mathrm { s } ^ { * } \mathrm {~m}$