Lasso Corporation manufactures Part B89 in its internal processing division. Lasso produces 10,000 units of Part 189 annually. The annual costs to produce Part 389 at the level of 10,000 units include: Direct materials $3.40 Direct labor $8.40 Variable manufacturing overhead $4.40 Fixed manufacturing overhead $3.40 Total cost $19.60 All of the fixed manufacturing overhead costs would continue whether Part 889 is made internally or purchased from an outside supplier. Assuming Lasso can purchase 10,000 units of the part from the Nadal Parts Company for $20.40 each, and the facilities currently used to make the part could be rented out to another manufacturer for $20.000 a year, what should Lasso do? O A. Make the part and save $2.20 per unit. O B. Buy the part and save $8.60 per unit. OC. Make the part and save $8.60 per unit. OD. Buy the part and save $2.20 per unit