Karen Company has the following cost and revenue structure for 2020: Total Fixed Costs $100,000 Selling price per unit $50 Variable costs per unit $25 Target Net Income for 2020 $91,000 (after taxes) Tax Rate 35% Required for 2020: Calculate the break-even point in units. (only enter digits, no $ sign, no commas, no decimal points) 4000 A/ Calculate the sales revenue (in dollars) required to achieve the target income. (only enter digits, no $ sign, no commas, no decimal points) A Calculate the difference in operating income when one extra unit is sold. (only enter digits, no $ sign, no commas, no decimal points) A If fixed costs increased by 4%, what is the new unit contribution margin required to maintain the same break-even point as before the increase in the fixed costs. (answer with one decimal point, no $ sign, no commas)