Gate2017 ss Q12

12Which of the following statements about parser is/are CORRECT?
I. Canonical LR is more powerful than SLR
II. SLR is more powerful than LALR
III. SLR is more powerful than Canonical LR

Option : A
Explanation :
Bottom up parsers in decreasing order of their power: CLR≫ LALR≫ SLR≫ LR (0)
The given statements:
I. Canonical LR is more powerful than SLR is CORRECT.
II. SLR is more powerful than LALR is INCORRECT
III. SLR is more powerful than Canonical LR is INCORRECT.

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