21. (6 points) Continuing with Bolt data in the previous problem, assume Bolt budgeted a 10.0% share sales of total bolt products in the local market. Reliable industry data indicates that the actual total number of bolt products sold in the market during same period was 5,250. a. The firm's market share variance based on contribution margin for the period is: 1) $6,615 Fav 2) $1,323 Untax 3) $1,523 Unfax 4) $ 966 Fav b. The firm's market size variance based on contribution margin for the period is: 1) $ 144 Fav 2) $1,523 Unfax 3) $1,008 Unfax. 4) $ 315 Fav