Doofenshmirtz Evil Incorporated has three process options with the following costs in dollars:

Process A: fixed cost of $$700,000$ and per$-$unit variable cost of $$250$

Process B: fixed cost of $$1,000,000$ and per$-$unit variable cost of $$125$

Process C: fixed cost of $$1,500,000$ and per$-$unit variable cost of $$100$

The point of indifference between Process A and Process B occurs at a VOLUME of