please show work. thumbs up will be given :) thanks

\begin{tabular}{cccccccc} & \multicolumn{3}{c}{ ACTUAL } & & \multicolumn{3}{c}{ BUDGET } \\ \cline { 2 - 4 } \cline { 6 - 8 } & 1/8 & 1/4 & 1/2 & & 1/8 & 1/4 & 1/2 \\ Sales\# units & 84 & 126 & 210 & & 200 & 100 & 200 \\ Price / unit & $25 & $32 & $45 & & $20 & $30 & $40 \\ Var. Cost / unit & $16 & $18 & $22 & & $15 & $17 & $20 \end{tabular} 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) $6,615Fav 2) $1,323 Unfav 3) \$1,523 Unfav 4) $966Fav b. The firm's market size variance based on contribution margin for the period is: 1) $144Fav 2) $1,523 Unfav 3) $1,008 Unfav 4) $315Fav