Assume that you want to evaluate the outcome of an acquisition in the hemp industry. Firm A has a value of $50 million, and Firm B has a value of $20 million. Combining the two would enable cost savings with a present value of $15 million. Firm A will pay shareholders of Firm B $25 million as part of the acquisition deal. How much do Firm A's shareholders gain from this acquisition?

a) $15 million

b) $10 million

c) $5 million

d) $0 million.