(a) Benefits under this subchapter payable for disability or death shall be paid only to the person entitled thereto, or to his legal or natural guardian if he has one, and shall not upon death of the person so entitled survive for the benefit of his estate or any other person.

(b) The benefit of a minor or an incompetent person who has no natural or legal guardian may, in the discretion of the Bureau be paid in whole or in such part as the Bureau may determine, for and on behalf of such minor or incompetent directly to the person or institution caring for, supporting or having custody of such minor or incompetent.

(c) In any case in which benefits are payable under this subchapter to any person who is prevented from accepting such benefits by the rules, regulations or customs of the church or the religious order or organization of which he is a member, such benefits will be paid, upon the request of such person, to such church or to such religious order or organization.