explain

4. We say that a DFA M for a language A is minimal if there does not exist another DFA Mx for A such that Mx has strictly fewer states than M. Suppose that M=(Q,,,q0,F) is a minimal DFA for A. Using M, we construct a DFA M for the complement AasM=(Q,,,q0,QF). Prove that Mis a minimal DFA for A. 2 points