Sroufe manufacturing intends to increase capacity by overcoming a bottleneck operation by adding new equipment. two vendors have presented proposals. the fixed costs are $ 55 comma 000 for proposal a and $ 75 comma 000 for proposal b. the variable cost is $ 14.00 for a and $ 11.00 for b. the revenue generated by each unit is $ 22.00. a) the break-even point in units for the proposal by vendor a = nothing units (round your response to the nearest whole number). b) the break-even point in units for the proposal by vendor b = nothing units (round your response to the nearest whole number).