Which of the following are decidable?I. Whether the intersection of two regular languages is infiniteII. Whether a given context-free language is regularIII. Whether two push-down automata accept the same languageIV. Whether a given grammar is context-free

Which of the following are decidable?I. Whether the intersection of tw

1.	Which of the following are decidable?I. Whether the intersection of two regular languages is infiniteII. Whether a given context-free language is regularIII. Whether two push-down automata accept the same languageIV. Whether a given grammar is context-free
A.	I and II
B.	I and IV
C.	II and III
D.	II and IV
Answer» C. II and III

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Which of the following are decidable?I. Whether the intersection of two regular languages is infiniteII. Whether a given context-free language is regularIII. Whether two push-down automata accept the same languageIV. Whether a given grammar is context-free

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