(a) Any one of the following will be sufficient evidence of total disability resulting in permanent incapacity for work:(1) a determination of total and permanent disability by the Texas Department of Insurance, Division of Workers' Compensation;(2) a determination of total and permanent disability by a Pension Board created pursuant to Texas Revised Civil Statutes Article 6243d-1;(3) a determination of total and permanent disability by another governmental agency authorized to make such a determination; or(4) a determination of total and permanent disability by an independent medical examination made at the request of the OAG.(b) A peace officer shall be subject at all times to re-examination by the OAG and shall submit himself or herself to such further examination as the OAG may require. If any peace officer shall refuse to submit himself or herself to any such examination, the OAG may, within its discretion, stop making annual payments.