Which of the following would be a potential match for the Perl-based regular exp

Question

Which of the following would be a potential match for the Perl-based regular expression /fo{2,4}/ ?
1. fol
2. fool
3. fooool
4. fooooool

Options:

A . Only 1

B . 2 and 3

C . 1, 3 and 4

D . 1 and 4

Answer: Option B

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