An Ice Cream Cone Costs $1

An ice cream cone costs $1.50. A can of soda costs $0.75. The relative price of an ice cream cone is

A) $1.50, the opportunity cost of a can of soda.
B) $0.75, the opportunity cost of a can of soda.
C) 1/2 can of soda, the opportunity cost of an ice cream cone.
D) 2 cans of soda, the opportunity cost of an ice cream cone.