Whenever a party is required to satisfy any person that a copy of a referral, objection or other document has been served on another party, that party may do so by providing—
| (a) | a copy of the proof of mailing the referral, objection or other document by registered post to the other party; |
| (b) | copy of the telegram, telex or telefax including proof of transmission, communicating the referral, objection or other document to the other party; |
| (c) | copy of a receipt signed by the other party or on that party's behalf if the copy of the referral, objection or other document was delivered by hand; or |
| (d) | statement confirming service signed by the person who delivered a copy of the referral objection or other party. |
