Read the following context and choose the best option to answer the question.
Context: " That 's why I thought you might be ill . " Sanzo 's frown deepened as he stared at the ground and ran a hand through his hair in distraction . " ... I ' m sorry , " he mumbled , shocking Hakkai and not paying attention at all to what he was saying as he retreated back inside .
Question: Why might have Hakkai been shocked by Sanzo ?
Options: 
A. Hakkai might not have been expecting to hear Sanzo say he was sorry .
B. Hakkai might have been expecting to hear Sanzo say something .
C. Hakkai might have been expecting to hear Sanzo say he was sorry .
D. Hakkai might not have been expecting to hear Sanzo say he was not sorry .


A