Four students are called to sit in four chairs on a stage. The students are Bob, Wanda, Carol, and Don. Bob and Wanda are cousins. If the students are called up in random order and take seats in the order in which they are called, what is the probability that Bob and Wanda will sit next to each other? Show your work.
There is a 50/50 chance Bob and Wanda will sit next to each other.