HUP Save & ex Contribuon margin is: Muple Choice Sales less cost of goods sold. Sales less variable production, variable selling, and variable administrative expenses. Sales less variable production expense. Sales less all variable and fixed expenses Given the cost for a Y = $23,000+ $8X, total cost at an activity level of 7,000 units would be: Multiple Chol 40 O $ 3.000 $79.000 $23.000 & $56.000