north safety products manufactures butyl gloves that offer permeation resistance to gas or water vapor for workers who use dangerous chemicals like ketones. the company has fixed costs of $12 million for its butyl glove production and unit variable costs of $3 per pair. if the company charges $7 per pair, how many pairs of gloves must it sell to break even? multiple choice 120,000 pairs 400,000 pairs 666,667 pairs 1,000,000 pairs 3,000,000 pairs