19. (10 points) Continuing with the Glendale Valves data in the previous problem, assume Glendale budgeted a 16.0% share of total valve product sales in the local market. Reliable industry data indicates that the actual total number of valves sold in the same period was 1,190,000. a. Glendale's market share variance based on contribution margin for the period is: b. Glendale's market size variance based on contribution margin for the period is