A chef prepares a multicourse meal at a client's home. For this service, she charges a base price of \$150, and adds an additional \$20 for each course ordered. If a client orders c courses, which of the following represents the total charge, in dollars, for the meal?
(A)\(170c\) (B)\(150 + c\) (C)\(150c + 20\) (D)\(150 + 20c\) (E)\(170 + 20c\)
D