Miley runs a pottery shop where she sells custom cups and bowls. She has very limited resources when it comes to having employees to create the shape of the pottery from clay. The cups take 0.5 hours to do this, and the bowls take 0.3 hours. Miley finds that the unit contribution margin for the cups is $250 and for the bowls it is $100. What is the contribution margin per unit of limited resource for the cups?

• A : $125

• B : $500

• C : $750

• D : $300