Read the following context and choose the best option to answer the question.
Context: Indeed , not so good time management skills on their part . There was one drunk guy in particular near us that was being rather annoying to everyone around him . I mean even Security was obviously keeping an eye on him for being so overly chummy with everyone .
Question: What may be the reason why they assumed the man was drunk ?
Options: 
A. He was being overly friendly with everyone .
B. None of the above choices .
C. He was slurring his speech .
D. He was staggering when he walked .


A