[Solved] When a monopolistically competitive firm is making zero economic profits,it is producing so that the average total cost curve is tangent to the demand curve.At this output: A)the firm is maximizing profits,and marginal cost must equal marginal revenue. B)the firm is not maximizing profits,and a slight increase or decrease in output will lead to positive profits. C)since economic profits are zero,the condition that marginal revenue equals marginal cost is irrelevant. D)the condition that marginal revenue equals marginal cost continues to be relevant,but the marginal revenue and marginal cost curves need not intersect directly below the point of tangency between the average total cost curve and the demand curve. Erotic Orientation: The preferred term for describing an individual's pattern of emotional, romantic, and sexual attraction to others. Homosexual People: Individuals who are sexually attracted to members of the same gender. Adult Courtship: The phase of a romantic relationship where individuals engage in behaviors aimed at seeking a partner for a long-term romantic relationship, often preceding engagement or marriage. Romantic Relationships: Emotional and intimate relationships that involve a significant degree of physical and emotional bonding between partners.