O a Olivia went to a dance party. She paid $12 as an entry fee. Once inside the dance party, she paid $2 per snack. She started the night with $30 and spent all her money.

which of the following represents an equation that could be used to model this situation?

A) 2x +12=30
B) 30+2x+12=0
C)2x -12= -30
D)30/2x =12​