1.

Using pumping lemma, which of the following cannot be proved as ‘not a CFL’?$

A. {a<sup>i</sup>b<sup>i</sup>c<sup>i</sup>|i>=0}
B. {ss|s‚àà{a,b}*}
C. The set legal C programs
D. None of the mentioned
Answer» E.


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