Which of the following grammar rules violate the requirement of an operator grammar? P, Q, R are non terminals, and r, s, t are terminals.

Which of the following grammar rules violate the requirement of an ope

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

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Which of the following grammar rules violate the requirement of an operator grammar? P, Q, R are non terminals, and r, s, t are terminals.

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