Read the following context and choose the best option to answer the question.
Context: No one else can " Heechul added , and then mentally hit himself for actually making things worse . Hankyung 's lips lifted into a small smile which failed to reach his eyes . Heechul had never seen this side of him before .
Question: Why did Heechul feel surprise ?
Options: 
A. Because Hankyung was behaving in a strange way .
B. Because Hankyung had mentally hit him .
C. Because Hankyung was eyeing him .
D. Because Hankyung was upset .


A