When should grep -F or the fgrep command be used to search the content of text files?

A.
When files need to be searched that contain non-ASCII text.

B.
When only the presence of the search pattern needs to be reported and not every line that
matches thesearch.

C.
When the text being searched for does not contain any regular expression patterns.

D.
When the text files will be searched multiple times. Subsequent calls to fgrep will run faster.