Sonya is going to purchase three bottles of soft drinks at a store. The store has 5 bottles of cola, 4 bottles of root beer, and 3 bottles of ginger ale. If she selects 3 bottles at random, determine the probability she selects:
a. 3 bottles of cola
b. No bottles of root beer
c. At least one bottle of root beer
d. A bottle of cola, a bottle of root beer, and a bottle of ginger ale in that order