Assume that markets are NOT semi-strong form efficient. Suppose that during a trading day important new information is released by a firm indicating that one of the firm's oil fields, previously thought to be very promising, just came up dry. which of the following scenarios is more likely to occur?

A. The price will fall over an extended period of time as investors begin to sell shares in the company.

B. The value of a share will drop immediately to a price that reflects the value of the new information.