1. For the activities in list I of Annex IV, the activity in question must have been previously pursued:

(a) for six consecutive years on a self-employed basis or as a manager of an undertaking; or

(b) for three consecutive years on a self-employed basis or as a manager of an undertaking, where the beneficiary proves that he has received previous training of at least three years for the activity in question, evidenced by a certificate recognised by the Member State or judged by a competent professional body to be fully valid; or

(c) for four consecutive years on a self-employed basis or as a manager of an undertaking, where the beneficiary can prove that he has received, for the activity in question, previous training of at least two years' duration, attested by a certificate recognised by the Member State or judged by a competent professional body to be fully valid; or

(d) for three consecutive years on a self-employed basis, if the beneficiary can prove that he has pursued the activity in question on an employed basis for at least five years; or