XYZ company uses a technology for producing its good. This enables the firm to meet the entire market demand at a lower price than its two competitors. What factor makes XYZ company a monopolist?...

XYZ company uses a technology for producing its good. This enables the firm to meet the entire market demand at a lower price than its two competitors. What factor makes XYZ company a monopolist? a. increasing average total costs. b. a legal barrier to entry. c. Knowledge of exclusive production techniques d. All of these