In the system below, YTR represents total revenue in dollars and YTC 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. YTR = 70- 700 9+1 YTC 1.4q+41.3 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. The break-even quantity is unit(s). (Simplify your answer.) B. The manufacturer cannot break even.