Read the following context and choose the best option to answer the question.
Context: When I noticed the inconsistency , I ferreted out a few lines of coding that did n't belong . It seems that someone tried to bug my system . " Tenten was silent for a moment as Jiraiya and Tsunade watched the feed with new eyes .
Question: Why was Tenten silent for a moment ?
Options: 
- He was bored .
 - None of the above choices .
 - He was sleeping .
 - He was concentrating .


He was concentrating .