The transitional allowance provided for in Article 10, the pension provided for in Article 12 and the pensions provided for in Article 14 shall not be drawn concurrently by the same person. Where a public office holder is entitled to claim benefit under more than one of those provisions, only that provision which is the most favourable to the claimant shall be applied. However, when a public office holder reaches the pensionable age as defined in Article 11, entitlement to the transitional allowance shall cease.