If L = {ab, c} is a language over the set A = {a, b, c}, then L³ is:

2017

1. A.

   {ababc, abcab, abc², cabab, cabc, c²ab, c³}

2. B.

   {ababab, ababc, abcab, abc², cabab, c²ab, c³}

3. C.

   {ababab, ababc, abcab, abc²abab, cabab, cabc, c²ab, c³}

4. D.

   {ababab, ababc, abcab, abc², cabab, cabc, c²ab, c³}

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Correct answer: D