The production of the form A->B , where A and B are non terminals is called(a) Null production(b) Unit production(c) Greibach Normal Form(d) Chomsky Normal FormThis question was addressed to me in a job interview.I'd like to ask this question from From Grammars to Push Down Automata topic in section Push Down Automata of Automata Theory

The production of the form A->B , where A and B are non terminals is c

1.	The production of the form A->B , where A and B are non terminals is called(a) Null production(b) Unit production(c) Greibach Normal Form(d) Chomsky Normal FormThis question was addressed to me in a job interview.I'd like to ask this question from From Grammars to Push Down Automata topic in section Push Down Automata of Automata Theory
Answer» The CORRECT answer is (b) Unit production Explanation: A->ε is termed as NULL production while A->B is termed as Unit production.

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