An electronics company has a monopoly on wireless light switches in a region. Each switch costs $24 to produce. There are 90 buyers who are willing to pay $31 for a switch, an additional 120 buyers who are willing to pay $26, and another 50 buyers who are willing to pay $22. What single price should the company charge to maximize profit?

A. $22 B. $24 C. $26 D. $31 E. None of A-D