A museum charges $8 for a group of 2 or fewer people. A group of more than 2 people must, in addition to the $8, pay $2 per person for the number of people above 2. The maximum group size is 10.

(a) If is the number of people, and is the cost to admit people, which of the following graphs A-D best represents this situation?

     
A   B   C   D

(Click on a graph to enlarge it.)

(b) What are the domain and range of this cost function? Enter your answers as comma separated lists of numbers.
Domain: help (numbers)
Range:   help (numbers)

You can earn partial credit on this problem.