Given the question: Read the article and select the best answer. Article: Free Fun Guides Free Admission to Hundreds of Museums Sept. 25 What a weekend! This Saturday, Sept. 25, hundreds of U.S. museums are admission free for the Smithsonian's yearly Museum Day. Unlike previous Museum Day celebrations, you must sign up for a free ticket that admits two people to any of the participating museums. That means filling out a form and having the ticket emailed to you. Not bad for a free offer that will give you admission to museums such as the Adler Planetarium in Chicago and the Air & Space Museum in San Diego. Free Books for Kids @ Barnes & Noble! If your kids love to read -- and we hope they do! -- be sure to sign them up for Barnes & Noble's summer reading programs so they can earn a free book! It's easy for kids ages 12 and under to participate. For Barnes & Noble's Passport to Summer Reading program, just download and print out your passport. Read any eight books, make a list of them on the back of the passport and bring it to any Barnes & Noble by September 7. Choose your free book from the list. FREE Night of Theater Across the U.S. in October It's the yearly run of the Free Night of Theater, when hundreds of theaters in 120 U.S. cities give away thousands of tickets to local productions. While the kickoff date is October 15, many of the theaters start releasing their free tickets by Oct.1 or in waves during the month of October for performance dates throughout the month. Ticket seekers are limited to two tickets for one performance. Find your city on the Free Night of Theater Website and check the listings for performances, their dates and their ticket giveaway times and locations. Question: Which of the following shows the similarity between Museum Day and Free Night of Theater? Options: A: They take place once a year. B: The same number of free tickets is given away. C: The tickets can be used in any U.S. city. D: They last for the same length of time.
The answer is:
A