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

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The Answer of 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

Which of the Following Instances of the Post Correspondence Problem