Read the list of sentences from the article.
1. The recent U.S. Chess Federation National High School Championships in Washington, D.C., had to add overflow rooms to accommodate a record 1,750 attendees.
2. Levy Rozman’s YouTube channel “GothamChess” has more than 3.5 million subscribers.
3. Hikaru Nakamura is an American grandmaster with 1.9 million YouTube subscribers.
4. Almost immediately, it seemed everyone in his school district was playing the game.
Which two sentences taken together provide the BEST evidence to support the idea that social media has helped chess become more popular among youths?