Q:Read the article and select the best answer. Article: Metro Pocket Guide Metrorail Each passenger needs a farecard to enter and go out. Up to two children under age five may travel free with a paying customer. Farecard machines are in every station. Bring small bills because there are no change machines in the stations and farecard machines only provide up to $50 in change. Get one day of unlimited Metrorail rides with a One Day Pass. Buy it from a farecard machine in Metro station. Use it after 9:30 a.m. until closing on weekdays, and all day on weekdays and holidays. Hours of service Open: 5 a.m. Mon.--Fri. 7 a.m. Sat.--Sun. Close: midnight Sun.--Thurs. 3 a.m. Fri.--Sat. nights Last train times vary. To avoid missing the last train, please check the last train times posted in stations. Metrobus When paying with exact change, the fare is $1.35. When paying with a SmarTrip card, the fare is $1.25. Fares for senior/disabled customers Senior citizens 65 and older and disabled customers may ride for half the regular fare. On Metrorail and Metrobus, use a senior/disabled farecard or SmarTrip card. For more information about buying senior/disabled farecard, SmarTrip cards and passes, please visit MetroOpensDoor.com or call 202-637-7000 and 202-637-8000. Senior citizens and disabled customers can get free guide on how to use proper Metrobus and Metrorail services by calling 202-962-1100. Travel tips Avoid riding during weekday rush periods--before 9:30 a.m. and between 4 and 6 p.m. If you lose something on a bus or train or in a station, please call Lost & Found at 202-96201195. Question: What is good about a SmarTrip card? Options: A: It is convenient for old people. B: It saves money for its users. C: It can be bought at any time. D: It is sold on the Internet.
A:
B