Beta Company sells wrist watches at $66 each. Variable cost incurred is $50 for each unit. The break-even point for Beta is 5,000 wrist watches. Determine the number of wrist watches that Beta must sell to earn an operating income of $91,200. a. 11,400 wrist watches b. 10,700 wrist watches C. 6,382 wrist watches d. 7,400 wrist watches