Question: For the alphabet = { a , b }, give regular expression for the language of all strings that contain the substring ab. A. ab(a

For the alphabet = {a, b}, give regular expression for the language of all strings that contain the substring ab.

A. ab(a + b)*

B. (a + b)*ab

C. (a + b)*ab(a + b)*

D. ab(a + b)*ab

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