Asap urgent will mark brianlest
the scatter plot shows the relationship between the average number of nightly customers and the number of months since a restaurant opened. the equation represents the linear model for this data.

y = 5x + 120

what does the number 5 in the equation mean in this context?

a. the restaurant has been open for 5 months.

b. there were 5 customers per month after the restaurant was open 120 months.

c. for every 5 months the restaurant has been open, there are 120 more customers per night.

d. the average number of customers per night increased by 5 each month.

e. there were 5 customers per night when the restaurant opened.