Which of the following are context-free languages?
(A) {wⁱ xʲ yᵏ zˡ | i + k = j + l, where i, j, k, l ≥ 0}
(B) {wⁱ xʲ yᵏ zˡ | i = j, k = l, where i, j, k, l ≥ 0}
(C) {wⁱ xʲ yᵏ zˡ | i = j = k and k ≠ l, where i, j, k, l ≥ 0}
(D) {wⁱ xʲ yᵏ zˡ | i = j = k + l, where i, j, k, l ≥ 0}
(E) {wⁱ xʲ yᵏ zˡ | i = j = l and k ≠ l, where i, j, k, l ≥ 0}

1. A(A) and (B) Only
2. B(B) and (C) Only
3. C(C) and (D) Only
4. D(D) and (E) Only

Pick an option to check yourself, or open the answer below.