Context: That was the first thing I wondered when I realized that he was n't joking . " He gazed at Goku again . " I suppose I 'll level with you ; we all know that Sanzo has not been himself lately . "

Question: Why is the narrator wary of Sanzo 's recent behavior ?
Options:
0. Sanzo is showing signs of sadness .
1. Sanzo is showing signs of anger .
2. Sanzo is showing signs of excitement .
3. Sanzo is showing signs of excellence .
Answer: 0