Read the following context and choose the best option to answer the question.
Context: We were looking for something spectacular to make the effort worth it . The first of the caves was a sizeable hole in the ground in which there were a few scrubby trees and some rocks . From the smell , it was pretty clear that it was also a nice out of the way spot for ill - prepared tourists to relieve themselves .
Question: What is the reason some tourist 's might be known as " Ill - prepared " ?
Options: 
A. They did n't bring hearty snacks .
B. The got lost without lights
C. They ate or drank heavily before spelunking .
D. None of the above choices .


C