Coast to Coast Surfboards Inc. manufactures and sells two styles of surfboards, Atlantic Wave and Pacific Pounder. These surfboards are sold in two regions, East Coast and West Coast. Information about the two surfboards is as follows: The sales unit volume for the territories and products for the period is as follows: a. Prepare a contribution margin by sales territory report. Compute the contribution margin ratio for each territory as a whole percent, rounded to two decimal places, if required. Coast to Coast Surfboards Inc. Contribution Margin by Territory Coast to Coast Surfboards Inc. Contribution Margin by Territory b. What advice would you give to the management of Coast to Coast Surfboards regarding the relative profitability of the two territories? The total contribution margin is for the East Coast, while the contribution margin ratio is for West Coast. This is because East Coast sells only Atlantic Wave, which have a contribution margin ratio but a contribution margin per unit. In attempting to improve the company's profitability, it is that changing the mix of products to the two territories will have much effect. In addition, the variable selling expenses per unit for the may be too high