Retailer: The Ace retailer that sells the drill has a cost of $77 per drill and makes a profit of $33 per drill. Wholesaler: The Ace cooperative has a cost of $64 per drill and a profit of $13 per drill. What is Gross Margin (%) for each Channel Member? Retailer's gross margin = 30%; Wholesaler's gross margin = 16.9% O Retailer's gross margin = 40%; Wholesaler's gross margin - 16.9% O Retailer's gross margin = 30%; Wholesaler's gross margin = 25.9% Retailer's gross margin = 40%; Wholesaler's gross margin = 25.9%