Chinese works of art exhibition in Zhenjiang Time:8:00 a.m.-5:00 p.m.Feb 20th,2025 Place:Zhenjiang Museum Price:RMB 20 per person,20% off for groups of 20 or more ◆Don\’t bring any dangerous things. ◆Put your cameras and videos in the lockers.They are not allowed to use. ◆Turn off your cell phones or set them to vibration mode（震动模式）. ◆Please don\’t talk loudly in the museum. ◆After the ticket has been sold,there is no refund （退款）.

（1）How long will the exhibition last? ______
A.8 hours.
B.9 hours.
C.5 hours.
D.12 hours.
（2）What can you take during enjoying the exhibition? ______
A.Cell phones.
B.Knives.
C.Cameras.
D.Videos.
（3）You want to watch the exhibition with your other 40 classmates,how much will you pay? ______
A.¥800.
B. ¥640.
C. ¥656.
D. ¥820.