Chad buys a Twitch prime membership so he can watch people streaming game play. The annual fee is $40. Chad really likes Crafter Steve's stream of Final Fantasy, so he subscribes to his channel for $10 each month.
If t = 10m + 40 models this scenario,
t = total cost;
m = number of months;

A. The total cost will increase by $40 for every 10 months pass

B. the total cost will increase by $10 for every 40 months that pass

C. the total cost will increase by $10 for every month that passes

D. the total cost will increase by $40 for every month that passes