Todrick Company is a merchandiser that reported the following information based on $1,000$ units sold: Sales $ $390,000$ Beginning merchandise inventory $ $26,000$ Purchases $ $260,000$ Ending merchandise inventory $ $13,000$ Fixed selling expense $?$question mark Fixed administrative expense $ $15,600$ Variable selling expense $ $19,500$ Variable administrative expense $?$ Contribution margin $ $78,000$ Net operating income $ $23,400$Required:Prepare a contribution format income statement.Prepare a traditional format income statement.Calculate the selling price per unit.Calculate the variable cost per unit.Calculate the contribution margin per unit.Which income statement format $($traditional format or contribution format$)$ would be more useful to managers in estimating how net operating income will change in response to changes in unit sales?