(A) Provision shall be made for the retirement of a member with one or more years of credited service who becomes totally and permanently disabled. Upon his retirement such a member shall receive a pension as determined in the ordinance, but in no case shall it exceed 2% of the said member's final compensation multiplied by his years, and fraction of a year of credited service; provided, that no disability pension shall be less than 20% of the member's average final compensation.
(B) Provision shall be made that if a member with less than ten years of credited service becomes totally and permanently disabled, his credited service shall be increased to ten years, provided he is in receipt of workmen's compensation benefits on account of his employment with the city.
(C) Provision shall be made that at the expiration of the period a retired member is in receipt of workmen's compensation benefits, on account of his employment with the city, he shall be given service credit for the period he was in receipt of said workmen's compensation benefits.
(D) Provision shall be made that a member who retires on account of disability, as provided herein, shall, prior to his voluntary retirement age, be physically examined periodically by a physician or physicians designated by the Board. If the disability retirant is found to be physically able and capable of resuming employment, his disability pension shall terminate and he shall be restored to city service.