Sentence Correction

Section 13(d) of the Securities Exchange Act of 1934 requires anyone who buys more than 5 percent of a company's stock make a public disclosure of the purchase.

(A) make
(B) will also make
(C) to make
(D) must make
(E) must then make


I choose C because of idiom: required ...to

Any other reason to choose C?

Are there any other usages with require, one is above, another is subjunctive ...requires that.

Apart from that any other usage?

No addtional information from me, as your explaination is clear enough to answer this question.

I also choose C