Refer to the Diagram Below,suppose You Have a Money Income

Refer to the diagram below,suppose you have a money income of $10 all of which you spend on Coke and boxes of popcorn.The prices of Coke and popcorn respectively are:

A) $.50 and $1.00.
B) $1.00 and $.50.
C) $1.00 and $2.00.
D) $.40 and $.50.