In the system below, yTR represents total revenue in dollars and yrc represents total cost in dollars for a manufacturer. If q represents both the number of units produced and the number of units sold, find the break-even quantity. 700 YTR = 70- q+1 YTC = 1.4q+ 41.3 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The break-even quantity is unit(s). (Simplify your answer.) O B. The manufacturer cannot break even