A businessman came across the following information on the commission bestowed for sales performance concerning products A, B and C in the last three months of 2021. Table 1: Sales Performance in Units October November December Total Product A 9,000 13,000 6,000 28,000 Product B 10,000 5,000 10,000 25,000 Product C 2,000 4,000 3,000 9,000 Table 2: Monthly Payment of commission Total Commission (Ksh) October 80,000 November 90,000 December 85,000 Examine whether the notable inconsistency in the total volume of sales among the three products is as a results of the variances in the rates of commission assigned to each product (12 marks)