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