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For Σ={a,b} the regular expression r = (aa)*(bb)*b denotes

(A) Set of strings with 2 a’s and 2 b’s
(B) Set of strings with 2 a’s 2 b’s followed by b
(C) Set of strings with 2 a’s followed by b’s which is a multiple of 3
(D) Set of strings with even number of a’s followed by odd number of b’s

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For Σ={a,b} the regular expression r = (aa)*(bb)*b denotes

(A) Set of strings with 2 a’s and 2 b’s
(B) Set of strings with 2 a’s 2 b’s followed by b
(C) Set of strings with 2 a’s followed by b’s which is a multiple of 3
(D) Set of strings with even number of a’s followed by odd number of b’s

› Reply To:

For Σ={a,b} the regular expression r = (aa)*(bb)*b denotes

(A) Set of strings with 2 a’s and 2 b’s
(B) Set of strings with 2 a’s 2 b’s followed by b
(C) Set of strings with 2 a’s followed by b’s which is a multiple of 3
(D) Set of strings with even number of a’s followed by odd number of b’s