Sentence Correction

I believe B is the answer, but apparently its Not.

SEC regulations require that (a public Company disclose to their) potential investors any legal, technological, or financial complications that could endanger their investment
A) a Pubic company disclose to their
B) a Public company discloses to its
C) a Public company disclose to its
D) Public companies disclose to its
E) Public companies have disclosed to their

IMO :C

require --> subjunctive mood

so we need plural verb
a company disclose to its..!