855-sec16-8

8.     The new regulations mandate that a company allows their retiring employees who would otherwise lose group health care coverage to continue the same insurance at their own expense for a specified period.

(A) that a company allows their retiring employees who would otherwise lose group health care coverage to continue

(B) companies to allow their retiring employees who would otherwise lose group health care coverage that they can continue

(C) that a company allow its retiring employees who would otherwise lose group health care coverage to continue

(D) companies allowing a retiring employee whose group health care coverage would otherwise be lost the continuation of（C）

(E) companies to allow a retiring employee whose group health care coverage would otherwise be lost he continuation of

my question is under the correct answer C, why is "A company" connected with "allow", shouldn't it be "allows"????CAN SOMEBOD HELP ME