ABC Company has two options to produce a product:

1. ABC could build their own factory for production, which yields $100,000 fixed cost and $10 variable cost per unit.

2. ABC could outsource the production to XYZ Company, which incurs $50,000 fixed cost and $20 variable cost per unit.

Assume ABC can sell every unit it produces. How many units of the product ABC will have to sell before Option 1 becomes more cost-efficient than Option 2 (or what is the break-even point/volume for the 2 options)? Show your calculation. (4 points)