Read the following context and choose the best option to answer the question.
Context: Jamie Hyneman and Adam Savage from Discovery Channel 's Mythbusters will be presenting a behind - the - scenes look into this popular show at the Moore Theater on October 4 . They will bring stories of myths gone wrong and outtakes of segments never seen on air . Tickets are between $ 35 and $ 47.50 but our members receive $ 5 off each ticket they purchase !
Question: What is the purpose of the post ?
Options: 
- A tv review
 - An ad
 - Tech support
 - A user review


An ad