An ice cream shop offers these toppings:
 • Chocolate chips
 • Walnuts
 • Strawberry sprinkles
 • Caramel
 • Hot fudge
 • Whipped cream
 • Gummy bears
 If a sundae must have exactly four toppings, how many different sundaes can you make
 A. 11
 B. 28
 C. 30
 D. 35