Which of the following regular expression identities are true? – McqOptions

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

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