Consider two firms with identical businesses, products, etc. The only differences between the two firms are related to their cost structure and their capital structure. Firm A's operating costs include 25% variable costs and 75% fixed costs. Firm B's operating costs include 60% variable costs and 40% fixed costs. In addition, Firm A has a debt-to-equity ratio of 140%, compared to 65% for firm B. 

Which of these firms will have a higher equity Beta? Briefly explain.