Context: " I thought I 'd make sure you were feeling all right . " Sanzo 's eyes narrowed in a frown . Hakkai 's brow furrowed slightly as he continued , watching Sanzo intently .

Question: What is the reason Hakkai 's brow furrowed ?
Options:
0. None of the above choices .
1. He wanted to pretend to look in a different direction .
2. Hakkai was n't trusting Sanzo .
3. The eyes and brow furrowed at each other in a battle of " who can stare the longest " .
Answer: 2