(c) Contents. The administrator of an employee pension or welfare benefit plan which covers fewer than 100 participants shall file a Form 5500-C “Return-Report of Employee Benefit Plan (with fewer than 100 participants),” or, as appropriate, a Form 5500-R “Registration Statement of Employee Benefit Plan (with fewer than 100 participants),” in the manner prescirbed in
§ 2520.104a-5.