Read the following context and choose the best option to answer the question.
Context: Deboard the mountain for the next hour and silently swear under my breath as I start to feel my knees and ankles give out under the weight of my pack . Continue to silently swear as the very last obstacle to the car is a stream that I can not jump . Remove shoes , remove socks , roll up pants . Cross .
Question: Why is the narrator restricted from moving ?
Options: 
A. Their car broke down .
B. They do n't have shoes .
C. The water is too much .
D. They lost their shoes .


C