Which is the only true statement among the following? There are some context-free languages that contain no infinite regular subsets. A regular language cannot contain a subset that is context free. O...

Extracted text: Which is the only true statement among the following? There are some context-free languages that contain no infinite regular subsets. A regular language cannot contain a subset that is context free. O A context-free language cannot contain a subset that is regular. A context-free language must contain an infinite regular subset. A context-free language cannot contain a finite subset.