Five friends (Alice, Bob, Carol, David, Emily) sat in a movie theater in a row containing $5$ seats, numbered $1$ to $5$ from left to right. During the movie Alice went to the lobby to get some popcorn. When she returned, she found that Bob had moved one seat to the left, Carol had moved two seats to the right, and David and Emily had switched seats, leaving an end seat for Alice. In which seat had Alice been sitting before she got up?