Read the following context and choose the best option to answer the question.
Context: It took approximately three and a half hours to reach the top , and a little over two hours to get back down . I think I possibly died halfway through . We started off on a trail we designed ourselves rather than at the trailhead , which was the start of an entire adventure . I got my legs scratched and bleeding from heather and bushes , climbed through barbed - wire fences , fell into lots of mud , and bitched as much as possible .
Question: Why do they feel they may have died halfway through .
Options: 
A. Because they had a minor heart - attack from the exertion .
B. Because the trail they had designed was poorly constructed .
C. Because the journey was exhausting and they felt drained .
D. None of the above choices .


C