436. IRS provision 254-B requires that an S corporation with assets of greater than $200,000 send W-2 forms to their full- and part-time employees on or before Jan. 31.
(A) that an S corporation with assets of greater than $200,000 send W-2 forms to their full- and part-time employees on or before Jan. 31
(B) an S corporation with assets of greater than $200,000 send W-2 forms to their full- and part-time employees on or before Jan. 31
(C) that an S corporation with assets of greater than $200,000 send W-2 forms to its full- and part-time employees on or before Jan. 31
(D) an S corporation with assets of greater than $200,000 send W-2 forms to their full- and part-time employees on Jan. 31 or before
(E) an S corporation with assets of greater than $200,000 send W-2 forms to its full- and part-time employees on or before Jan. 31
Can someone please explain why the answer is c and not e? (i.e. why "requires that" instead of "requires") I got this right but I guessed. idiom perhaps?