1.

For a counter automaton, with the symbols A and Z0, the string on the stack is always in the form of __________

A. A
B. A<sup>n</sup>Z0, n&gt;=0
C. Z0A<sup>n</sup>, n&gt;=0
D. None of the mentioned
Answer» C. Z0A<sup>n</sup>, n&gt;=0


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