Write a question about the following article.

Genkai shivered and growled at that thought . " I do n't see that happening as long as I ' m still walking this earth , " she grumbled . Kayla broke out laughing and stuck out her tongue saying , " We wo n't have to wait that long , she can go any minute now ! " She was so hysterical about it that she even got Genkai 's friends laughing and a smirk from Hiei . Genkai 's face turned red .

Question:
Why did Genkai 's face turn red ?
Choose your answer from: 1). He has allergies; 2). He is overheating; 3). He is embarassed; 4). He is holding his breath;