Which of the following represents the language over the set A = {a, b} consisting of all words beginning with one or more a's and followed by the same…

1. AL = {a, ab, ab², …}
2. BL = {aᵐbⁿ : m > 0, n > 0}
3. CL = {aᵐbᵐ : m > 0}
4. DL = {bᵐabⁿ : m ≥ 0, n ≥ 0}