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: What may be the reason he retreated back insde ?
Option 0: He was afraid he was going to get attacked .
Option 1: He needed to use the bathroom that very moment .
Option 2: He was hungry and wanted something to eat .
Option 3: None of the above choices .
Answer: 3