12.01 When a vacancy occurs, the job vacancy, with the job rate, will be posted on the main bulletin board for a period of four (4) working days. The job will be filled by the bidder with the highest plant seniority who is able to satisfactorily perform the work to be done. 12.02 When a job vacancy occurs and it is known it is for a temporary period, the job posting shall so designate. 12.03 When an employee successfully bids on a new job, he/she shall maintain his/her existing rate, unless the employee has had previous experience on the job; in that case, he/she shall receive the job rate immediately. In the above collective agreement, 12.01, 12.02, and 12.03 can best be described as: Question 13 options: Clauses of Article 12 in the collective agreement Schedules contained in the collective agreement Appendices contained in the collective agreement Letters of Understanding contained in the collective agreement