. True or false. -(a) (ab)*a = a(ba)". If yes, give a DFSA to describe the language. Otherwise, give a string that can be generated by one but not by the other. (b) (atb)-(a+b*). If yes, give a DFSA to describe the language. Otherwise, give a string that can be generated by one but not by the other. (c) If L is nonregular, then the complement of L is also nonregular. d) IfLi cL2 and Li is not regular, then L2 is not regular. (e) IfL L2 and L2 is not regular, then Li is not regular