Cathy has a small retail business in a busy mall. During the holiday season her inventory grows ...

Cathy has a small retail business in a busy mall. During the holiday season her inventory grows significantly and she simply doesn't have the storage space at her store. As a result, she has decided to have the product shipped to her home where she will temporarily store the items she will replenish her stock with over the season. In this case, the implicit cost is:
A) the interest she has to pay on holding the extra inventory
B) the delivery fee to her home
C) the opportunity cost of the storage space in her home
D) the cost of the additional inventory