1.

Consider the following languages:L1 = {anbmcn + m: m, n ≥ 1}L2 = {anbnc2n: n ≥ 1}Which one of the following is TRUE?

A. Both L1 and L2 are context-free
B. L1 is context-free while L2 is not context-free
C. L2 is context-free while L1 is not context-free
D. Neither L1 nor L2 is context-free
Answer» C. L2 is context-free while L1 is not context-free


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