Betty wants to use her knitting skills to make a little extra money so she can enjoy a theatre weekend with her besties. She's got the pattern down for a hat, scarf, and mittens, but she realizes that her available time is limited. She should be able to sell as many of any item as she can make (they all sell for \$14), but she wants to make sure she's making the best use of her time. See below for cost and time information. Calculate the contribution margin per unit of the scarce resource for each item. (Round answers to 2 decimal places, e.g. 15.25.) Which item should Betty focus on in order to maximize her profitability and resources? Betty wants to use her knitting skills to make a little extra money so she can enjoy a theatre weekend with her besties. She's got the pattern down for a hat, scarf, and mittens, but she realizes that her available time is limited. She should be able to sell as many of any item as she can make (they all sell for \$14), but she wants to make sure she's making the best use of her time. See below for cost and time information. Calculate the contribution margin per unit of the scarce resource for each item. (Round answers to 2 decimal places, e.g. 15.25.) Which item should Betty focus on in order to maximize her profitability and resources