Which of the following instances of the post correspondence problem ha – McqOptions

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1.	Which of the following instances of the post correspondence problem has a viable sequence (a solution)?
A.	{(b, bb), (bb, bab), (bab, abb), (abb, babb)}
B.	{(ab, aba), (baa, aa), (aba, baa)}
C.	{(ab, abb), (ba, aaa), (aa, a)}
D.	none of the above
Answer» D. none of the above

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