Given the question: Read the following article and select the best answer. Article: The City Bike program rolled into New York last spring and proved a hit, with nearly 12,000 New Yorkers signing up for annual memberships. Since 2010, over a dozen US cities have introduced bike-share programs. There're plenty of bike stations near parks and other car-free areas. The programs we looked at in major cities work the same way. You buy a 24-hour pass. During the time, you get an unlimited number of 30-minute rides. If you go over your given half-hour ride time, you start paying fees for each following 30-minute period. Here are some of the biggest bike-share program in America. Minneapolis: Nice Ride Minnesota Station : Minnehaha Ave. & Minnehaha Pkwy How much: $ 6 for a 24-hour pass. How it works: The first 30 minutes are included in the pass; $ 1.50 for the second 30 minutes; $ 4.50 for the third 30 minutes; later $ 6 for every half an hour. Chicago: Divvy Bikes Station : Lakeshore Drive and Monroe St; also Museum Campus How much: $ 7 for a 24-hour pass, with unlimited 30-minute trips. How it works: The first 30 minutes are included in the pass; $ 2 for the second 30 minutes; $ 6 for the third 30 minutes; later $ 8 for every half an hour. New York City: Citi Bike Station : Central Park So. & 6thAve; also Broadway & W.57thSt. How much: $ 9.95 for a 24-hour pass. How it works: The first 30 minutes are included in the pass; $ 4 for the second 30 minutes; $ 9 for the third 30 minutes; later $ 12 for every half an hour. Boston: Hubway Station : Tremont St. & West St. How much: $ 6 for a 24-hour pass. How it works: The first 30 minutes are included in the pass; $ 2 for the second 30 minutes; $ 4 for the third 30 minutes; later $ 8 for every half an hour. We are volunteers. If you want to know more information, please contact us. Question: If you visit Boston by riding Hubway bike for 3 hours, you have to pay _ . - $6 - $ 30 - $ 20 - $ 36
The answer is:
$ 36