Edith is looking on a score for the time signature. She sees that the time signature is three-four. How does Edith know this?

1. She saw a 3 to the left of the treble clef.

2. She saw a 3 over a 4 on the staff.

3. She saw the notation c for common time.

4. She saw the notation w for waltz time.

The correct answer is 2. She saw a 3 over a 4 on the staff. This indicates a time signature of three-four.