Crane Bucket Co, a manufacturer of rain barrels, had the following data for 2019. (a) What is the contribution margin ratio? Contribution margin ratio % What is the break-even point in dollars? Break-even point eTextbook and Media (c) What is the margin of safety in dollers and as a ratio? Margin of safety 5 Marginof safety ratio Margin of safety ratio % (d) If the company wishes to increase its totai dollar contribution margin by 30% in 2020 , by how much will it need to increase its sales if selling price per unit, variable price per unit and total fixed costs remain constant? Total increase in sales required