The answer of B is not correct. please help me out, a),b),c) Thank you.

Hyundai Motors is considering three sites--A B, and cat which to locate a factory to build its new model automobile, the Hyundai Sport C150 The goal is to locate at a minimum-cost site whero cost is measured by the annual fixed plus variable costs of production Hyundai Motors has gathered the following data Site Annualized Fixed Cost B C $10,000,000 $22,000,000 $30,000,000 Variable Cost per Auto Produced $2,400 $1,900 $1.000 The firm knows it will produce between 0 and 60,000 Sport C150s at the new plant each year, but, thus far, that is the extent of its knowledge about production plans a) The value of volume of production above which it is recommended - Sport C150 (round your response up to the next whole number) b) The value of volume. V. of production below which she is recommended = 10867 Sport C150s (round your response up to the next whole number). c) Over what range of volume is site optimal? A Ste B s optimal for volumes from 10,067 to 21 657 Sport C150s OB. Ste is optimal for volumes above 21 657 Sport C150 OC. Ste 8 is never optimal because ts cost Ine always exceeds that of or for all volume levels OD. So 8 s always optimal because its cost ine is always below that of A and to all volume bevels