Tickets to a basketball game can be ordered online for a set price per ticket plus a $5.50 service fee. The total cost in dollars for ordering 5 tickets is $108.00. Which linear function represents c, the total cost, when x tickets are ordered?
A.c(x) = 5.50 + 20.50x
B.c(x) = 5.50x + 20.50
C.c(x) = 5.50 + 21.60x
D.c(x) = 5.50x + 21.60