Answer the following questions about the DFA

The superscript + means "one or more" whereas superscript * means "zero or more." Answer yes or no

a) Does M accept every string in (babab)⁺ that is every string that repeats babab over and over again?

b) Does M accept every string in b(abab)⁺?

c) Does M accept every string in b(ab)^{* ?}