Which statement is true?

ISRO Scientist/Engineer SC · 2015 · Computer Science

1. A.

   LALR parser is most powerful and costly as compare to other parsers

2. B.

   All CFG\'s are LP and not all grammars are uniquely defined

3. C.

   Every SLR grammar is unambiguous but not every unambiguous grammar is SLR

4. D.

   LR(K) is the most general back tracking shift reduce parsing method

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