Answer:
B. 25; left the market value of the bidding firms unchanged.
Step-by-step explanation:
Research suggests that, on average, acquisitions increased the market value of target firms by 25% and left the market value of the bidding firms unchanged.
This simply means, a target firm's market value increases by 25 percent as soon as a bidding firm shows interest in acquiring or buying it while the bidding firm' market value remains the same.