For a science class, David recorded the daily high temperatures for five days. His calculations showed that the mean and median temperatures for the five days were the same. Which set of data supports David's calculation?

1. (42°, 40°, 44°, 39°, 45°)

2. (42°, 39°, 38°, 44°, 46°)

3. (42°, 39°, 38°, 45°, 47°) ​