Read the following context and choose the best option to answer the question.
Context: I know it 's a little early but i ' m sure a lot of people are already booking rooms . I just wanted to give a tip to everyone.yesterday i tried booking at the holiday inn on the web and it said it was sold out . i tried this morning and it was available .
Question: What may happen after this situation with the hotel ?
Options: 
A. None of the above choices .
B. They will book their rooms at the same time .
C. They will try to book rooms together .
D. They will keep checking the hotel 's availability .


D