A firm plans to begin production of a new small appliance. The manager must decide whether to purchase the motors for the appliance from a vendor at $$10$ each or to produce them in$-$house. Either of two processes could be used for in$-$house production; Process A would have an annual fixed cost of $$175,000$ and a variable cost of $$5$ per unit, and Process $B$ would have an annual fixed cost of $$190,000$ and a variable cost of $$4$ per unit. Determine the range of annual volume for which each of the alternatives would be best. $($Round your first answer to the nearest whole number. Include the indifference value itself in this answer.$)$

For annual volumes of

or less,

purchase from the vendor

is best. For annual volumes above that amount,