The limits on granting wage credits described in § 404.1342 (c) and (d) do not apply—

(a) If the wage credits are used solely to meet the insured status and quarters of coverage requirements for a period of disability as described in §§ 404.132 and 404.133;

(b) If you are the surviving spouse or child of a veteran of the World War II period or post-World War II period and you are entitled under the Civil Service Retirement Act of 1930 to a survivor's annuity based on the veteran's active service and—

(1) You give up your right to receive the survivor's annuity;

(2) A benefit under the Civil Service Retirement Act of 1930 based on the veteran's active service was not payable to the veteran; and

(3) Another Federal benefit is not payable to the veteran or his or her survivors except as described in paragraph (c) of this section; or

(c) For the years 1951 through 1956, if another Federal benefit is payable by the Army, Navy, Air Force, Marine Corps, Coast Guard, Coast and Geodetic Survey, or the Public Health Service based on post-World War II active service but only if the veteran was also paid wages as a member of a uniformed service after 1956.