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 .

Based on the preceding passage, choose your answer for question Why did the smile fail to reach Hankyung 's eyes ?
Options are: *Because the smile was genuine . *Because Hankyung 's eyes were swollen . *Because the smile was insincere . *Because Hankyung 's eyes were closed .
The answer is:
Because the smile was insincere .