Which excited electron has the lowest energy?

A green dot in the middle of 5 concentric circles. The first away from the green dot is labeled n = 1. The second circle away from the green dot is labeled n = 2. The third circle away from the green dot is labeled n = 3. The fourth away from the green dot is labeled n = 4 and the last is labeled n = 5. There is an orange dot on the n = 5 circle.
A green dot in the middle of 5 concentric circles. The first away from the green dot is labeled n = 1. The second circle away from the green dot is labeled n = 2. The third circle away from the green dot is labeled n = 3. The fourth away from the green dot is labeled n = 4 and the last is labeled n = 5. There is an orange dot on the n = 4 circle.
A green dot in the middle of 5 concentric circles. The first away from the green dot is labeled n = 1. The second circle away from the green dot is labeled n = 2. The third circle away from the green dot is labeled n = 3. The fourth away from the green dot is labeled n = 4 and the last is labeled n = 5. There is an orange dot on the n = 3 circle.
A green dot in the middle of 5 concentric circles. The first away from the green dot is labeled n = 1. The second circle away from the green dot is labeled n = 2. The third circle away from the green dot is labeled n = 3. The fourth away from the green dot is labeled n = 4 and the last is labeled n = 5. There is an orange dot on the n = 2 circle.