PLEASE HELP! WILL GIVE BRAINLIEST TO THE FIRST ANSWER THAT SHOWS STEPS!

Frankie bought a new computer. He made an initial payment of 50$ to the store, and he will pay 30$ each month until the computer is paid off. Which equation represents the relationship between m, the number of monthly payments Franke has made, and t, the total amount that Frankie has paid the store?

A. t=50m+30
B. t = 30m - 50
C. t = 50m - 30
D. t = 30m + 50