(1) Subject to subsections (2) to (7), a person who is a child of a deceased member shall not be regarded as a child for the purposes of the payment of a children's pension in any of the following cases:

(a) a person, other than a person to whom paragraph (c) relates, who was not wholly or mainly financially dependent on the deceased member immediately before the deceased member's death;

(b) a person who is married, in a civil partnership or cohabiting with another person;

(c) a person to whom or in respect of whom emoluments or grants for education, instruction or training are payable and where those emoluments made the person, immediately before the deceased member's death, not financially dependent on the deceased member.