In which of the following structures is it possible to mirror the non-context-free language {aⁿ bᵐ cⁿ dᵐ}?

A) {aᵐ bⁿ cᵐ dⁿ}
B) {aⁿ bᵐ cⁿ dᵐ}
C) {aᵐ bᵐ cⁿ dⁿ}
D) {aⁿ bⁿ cᵐ dᵐ}
E) {aⁿ bⁿ cᵐ dᵐ}