Which of the following grammar rules violate the requirements of an operator grammar ? P, Q, R are nonterminals, and r, s, t are terminals.1. P → Q R2. P → Q s R3. P → ε4. P → Q t R r

Which of the following grammar rules violate the requirements of an op

1.	Which of the following grammar rules violate the requirements of an operator grammar ? P, Q, R are nonterminals, and r, s, t are terminals.1. P → Q R2. P → Q s R3. P → ε4. P → Q t R r
A.	1 only
B.	1 and 3 only
C.	2 and 3 only
D.	3 and 4 only
Answer» C. 2 and 3 only

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Which of the following grammar rules violate the requirements of an operator grammar ? P, Q, R are nonterminals, and r, s, t are terminals.1. P → Q R2. P → Q s R3. P → ε4. P → Q t R r

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