A four-pack of 4242-ounce ink cartridges sells for $85.99$85.99. The expression 42c42c represents the amount of ink in a number of cartridges. What does the variable cc represent?
A. The amount of ink in a four-pack


B. A number of cartridges


C. The cost of each four-pack


D. A number of four-packs of cartridges