Proof of professional competence as provided for in article I of article L. 511-2 must be provided by presenting one of the following documents, as appropriate:
a) The training booklet defined in article R. 514-4 ;
b) Training certificate referred to in article R. 514-5 ;
c) Certificate of employment ;
d) Diploma, title or certificate mentioned in articles R. 512-9, R. 512-10 and R. 512-12.