A gumball machine has 78 gumballs. each person who puts a coin into the machine gets 3 gumballs. after a certain number of people get gumballs, there are 54 gumballs remaining.
Which equation could we use to estimate how many people (p) got gumballs out of the machine?
A. 80-3-50=p
B. 80÷3+50=p
C. (80+50)÷3=p
D. (80-50)÷3=p