What does this UNIK or Linux command provide?

What does this UNIK or Linux command provide?
for fie in `find. -name `*.txt”; do perl -i -pe ‘s:foo:bar:g’ $file; done

What does this UNIK or Linux command provide?
for fie in `find. -name `*.txt”; do perl -i -pe ‘s:foo:bar:g’ $file; done

A.
a string search for the words "foo" or "bar"

B.
a string search for the words "foo" and "bar"

C.
a string replacement of the word "foo" to the word "bar"

D.
a list of all text files with the words "foo" or "bar" in them



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