Pushdown automata are _____ machines augmented with additional memory

1.	Pushdown automata are _____ machines augmented with additional memory in the form of a stack.
A.	nondeterministic infinite state
B.	deterministic finite state
C.	nondeterministic finite state
D.	deterministic infinite state
Answer» D. deterministic infinite state

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Pushdown automata are _____ machines augmented with additional memory in the form of a stack.

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