Which expression is equivalent to −24 1/2 + 16.15 − 4?
Select all that apply.

A. 24 1/2 − 16.15 + 4
B. 16.15 − 28.5
C. −28.5 + 16.15
D. −20 1/2 + 16.5
E. 12.15 − 24 1/2