Humane Corp. headquartered in Quebec, Ontario, Canada, provides services in three provinces in Canada. For 2022, it recorded the following data. Quebec Ontario Alberta Total Sales revenue $3,956,000 $5,594,000 $1,970,000 $11,520,000 Variable costs (% of sales) 28% 40% 45% Traceable fixed costs 2,145,320 2,768,450 730,560 5,644,330 Common fixed costs 1,590,000 The total contribution margin for Humane Corp. is a. $11,520,000 b. $7,288,220 c. $5,644,330 d. $1,590,000