A concern participating in the 8(a) BD program may leave the program by any of the following means:

(a) Expiration of the program term established pursuant to § 124.2;

(b) Voluntary withdrawal or voluntary early graduation;

(c) Graduation pursuant to § 124.302;

(d) Early graduation pursuant to the provisions of §§ 124.302 and 124.304; or

(e) Termination pursuant to the provisions of §§ 124.303 and 124.304.