Head-First Company plans to sell 5,000 bicycle helmets at $70 each in the coming year. Unit variable cost is $49 (includes direct materials, direct labor, variable overhead, and variable selling expense). Total fixed cost equals $29,400 (includes fixed factory overhead and fixed selling and administrative expense). Break-even units equal 1,400.Required:1. Calculate the margin of safety in terms of the number of units.2. Calculate the margin of safety in terms of sales revenue.