Based on the context and the answer, generate a question. 

Context: Tired , but happy , Carl makes a pit stop on the way back to Westminster and orders us eight cones from Mickey D 's . It was Rita 's Ice at the harbor for $ 32 . or McD 's on the road for $ 8.72 .

Answer:

McDonald 's was the cheaper option for ice cream .



Why did they get ice cream at McDonald 's instead ?