Canada Post is evaluating the productivity of its mail processing centres. The centres differ in the degree of automation, the type of work that can be performed and the skill of the workers. Centre 1 2 3 Piece Processed per hour 1,000 2,000 3,000 Number of Workers per hour 10 5 2 Hourly Wage Rate $20.50 $25.00 $27.00 Overhead Rate per hour $10.00 $25.00 $50.00 A. Calculate the multifactor productivity for each centre (3mks)