The museum does many dinosaur shows during the day. The number line shows the time that the first show starts.

The number line shows time from 10:00 a.m. to 12:00 p.m. in increments of 1 hour and each interval is divided into fourths. The dot labeled First Dinosaur Show is at the first tick mark between 10:00 a.m. and 11:00 a.m..

A new show starts every 30 minutes after the first show. At which of these times will a show start?
A.
10:30 a.m.

B.
10:45 a.m.

C.
11:00 a.m.

D.
11:40 a.m.

A. 10:30 a.m.