Which of the following regular expression identities are true?
A. (r+s)*=r*s*
B. (r+s)*=r*+s*
C. (r+s)*=(r*s*)*
D. r*s*=r*+s*
Answer:C
Which of the following regular expression identities are true?
A. (r+s)*=r*s* B. (r+s)*=r*+s* C. (r+s)*=(r*s*)* D. r*s*=r*+s*