Using the following information taken from the first week in November operating and financial reports of Hudson's steakhouse, what i the operation's weighted contribution margin for the six types of steaks it sells? Menu Item Contribution Number Sold Margin New York Strip $11.50 85 Cowboy Ribeye $9.50 95 Filet $11.00 120 Petite filet $8.50 65 Sirloin $13.50 360 Prime Rib $10.00 410 Total 1,135 O a. $11.20 O b. $12.20 c. $12.70 O d. $11.70