The table shows the cost of renting movies online.

number of movies cost

1 $3.99

2 $7.98

3 $11.97

4 $15.96

5 $19.95

what does the rate of change mean in this situation?

a) the cost increases $11.97 for every additional movie rented .

b) the cost increases $7.98 for every additional movie rented.

c) the cost increases $3.99 for every additional movie rented.

d) the cost increases $15.96 for every additional movie rented