In this task, you're given a statement, and three sentences as choices. Your job is to determine which sentence clearly disagrees with the statement. Indicate your answer as '1', '2', or '3' corresponding to the choice number of the selected sentence.
Q: Statement: The museum focuses on Spanish and international 20th- century art, and is best known for exhibiting Picasso's monumental Guernica behind bulletproof glass. Choices: 1. The museum focuses mainly on 19th century art, but it is best known for exhibiting Picasso's Guernica. 2. The museum is best known for exhibiting Picasso's monumental Guernica behind bulletproof glass. 3. The bulletproof glass makes it somewhat difficult to see the painting, but the museum considers it an acceptable cost for protecting it.
A:
1