Look at the following schedule.
| Science museum activity schedule |
|---|
| Activity | Hall A | Hall B | Hall C |
|---|
| Rocket launch | 9:15 A.M. | 11:00 A.M. | 1:30 P.M. |
| Robot challenge | 10:00 A.M. | 12:15 P.M. | 2:00 P.M. |
| Slime lab | 10:45 A.M. | 1:00 P.M. | 3:15 P.M. |
| Dinosaur discovery | 11:30 A.M. | 2:30 P.M. | 3:45 P.M. |
| Space exploration | 12:00 P.M. | 3:00 P.M. | 4:15 P.M. |
Ethan wants to attend two different activities in Hall A, both before 11:00 A.M.
Which two activities should he choose?