. 18 Points For each of the following statements, state whether it is true or false. Explain. (a) baa E a*b*a*b* (b) a* Ub* = (a U b)* (c) (a*b*)* = (a U b)* (d) b*a* n a*b* = a* U6* (e) a*b* n c*d* = 0 (f) abcd (a (cd)* b)*