At Revolution Doughnuts in Fort Collins, Colorado, a Cup of Coffee

At Revolution Doughnuts in Fort Collins, Colorado, a cup of coffee or a doughnut is $1. Suppose Hannah loves going to Revolution Doughnuts and usually buys 2 doughnuts and 1 cup of coffee. On the way to the shop, Hannah finds an extra $2 dollars in change in her car and buys an extra doughnut and cup of coffee. This means

A) doughnuts are an inferior good and coffee is a normal good for Hannah.
B) doughnuts are a normal good and coffee is an inferior good for Hannah.
C) doughnuts and coffee are normal goods for Hannah.
D) doughnuts and coffee are inferior goods for Hannah.