1. [5 pts] Write the formal description of each set described by the regular expression below. Assume alphabet I = {0, 1}. Example: (OU 1)*00(OU 1)*110U 1)* Answer: L = {xy where x contains substring 00 and y contains substring 11 A) 1*018 B) (EEE) C) (" 0) (11)1 D) 0* U1* E) (10)+(EU)