A firm plans to begin production of a new small appliance. The manager has three options: Option 1: purchase the motors for the appliance from a vendor at $10 each; Option 2. produce them in house using technology A with an annual foxed cost of $6500 and a variable cost of $6 per unit; or Option 3: produce them in house using technology B with an annual fixed cost of $40000 and a variable cost of $4 per unit. The range of output for which Option 1 is best is ___ units. The range of output for which Option 2 is best is ___ units. The range of output for which Option 3 is best is ___ units.