Question 14 54 The analysis is a technique used to assess the returns associated with various cost structures and levels of sales. Obreakeven O marginal time-series Osales Question 15 6 pts The sales break-even point is defined as: the level of sales that a firm must reach to cover all operating costs the level of income that a firm must reach to cover variable costs the point where operating income equals fixed costs the level of sales that a firm must reach to cover fixed costs