Read the following context and choose the best option to answer the question.
Context: Was n't long before he 'd drowned his woes and told anyone who could hear him ( which was just about everybody ) of his epic journey ... . The ding - ding - ding of the slot machines and the incessant cigarette smoke in the casinos nearly made me crazy , but then a " native " ( someone who actually lives in Vegas ) took us up the the Valley of Fire , an amazing natural wonderland of rocks of all sizes and shades . We stopped at an area called ' The Mouse 's Tank ' , named after an alleged Southern Paiute Indian renegade named ' Little Mouse ' who hid out there in the 1890 's . He was accused of shooting two prospectors and apparently went wild on a few occasions when he got drunk .
Question: What may be a fact about their trip to Vegas ?
Options: 
- None of the above choices .
 - They had traveled there with a group of friends .
 - They were there to visit the Valley of Fire .
 - They had learned some history about Vegas .


They had learned some history about Vegas .