Question: Consider the following ambiguous grammar S = B | CB=aB|Bb | DC:=bC | Ca | DD ::=x Which of the following regular expressions describes

Consider the following ambiguous grammar S = B | CB=aB|Bb | DC:=bC | Ca | DD ::=x Which of the following regular expressions describes the same set of strings? (a + aa)"xb' + (b + bb)*xa*. (aa*)*xb* + (bb*)*xa* Oh a*xb* + b*xa* All of the above. None of the above.

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