Here is a poster on a middle school website. Going, Going, Gone! The Haynes Middle School Parent Teacher Organization invites you to attend our latest fund (基金)-raiser, The Fourth Annual Haynes School Auction (拍卖)! Saturday, May 10 6:00 p.m. —11:00 p.m. in the school hall 6:00 p.m. —6:30 p.m. : All items for auction are previewed. 6:30 p.m. —7:00 p.m. : Silent auction begins. 7:00 p.m. —7:30 p.m. : Highest bidders (出价人) from silent auction are determined. 7:30 p.m. —11:00 p.m. : Main auction begins. Items up for bids in the silent auction range in value from $5.00 to $30.00. Items up for bids in the main auction include the following: ·Airline tickets to a place of your choice ·Weekend getaways at first-class hotels ·Season tickets to the Chicago Bears football game ·$50 gift tickets to local gift shops, restaurants, and salons ·Theater tickets to The Merchant of Venice Don’t miss the boat! Book your tickets today. Last year, tickets sold out in five days! Tickets are sold on a first-come, first-served basis. $15.00 per person. All the money from the auction will be given to the Haynes School computer laboratory. The phrase "first-come, first-served" tells you that ______.
A．people can buy the tickets on the first day only B．the person who is first to arrive will receive a ticket at no charge C．food and drink will be served at the auction D．tickets are sold in the order of who arrives first to buy them