When they saw that it was snowing, Sheila and Bob Crandall decided to take the train to visit Sheila's Aunt Janet. Aunt Janet lives 218 miles from Sheila and Bob. The roundtrip train tickets cost $32.50 each. On all their other trips to visit Aunt Janet, Sheila and Bob had driven their car.

Question: Sheila and Bob will have to buy four different train tickets.
Options:
A. true, B. false, C. uncertain
Answer: "B"