Which of the following statement is true?

1998

Answer: C. Canonical LR parser is more powerful than LALR parser.

1. A.

   SLR parser is more powerful than LALR.

2. B.

   LALR parser is more powerful than Canonical LR parser.

3. C.

   Canonical LR parser is more powerful than LALR parser.

4. D.

   The parsers SLR, Canonical LR, and LALR have the same power.

Attempted by 2 students.

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Correct answer: C