what if it is weak form efficient?

3) ( 1 point) Suppose Ford earnings was publicly announced today and it was below market expectation. If markets are semistrong-form efficient (and there is no other relevant information being reported in the previousext week or changes in require rates of return), then: a) We should see no change in Ford stock price over this period regardless of leakage of information since efficient prices already incorporated all information before b) We should see an increase in Ford stock price today and not over the previousext week regardless of any potential leakage of information over the previous week c) We should see a decrease in Ford stock price today and not over the previousext week regardless of any potential leakage of information over the previous week d) We should see a decrease in Ford stock price today and potentially over the following week as markets incorporate the information released, but not over the previous week [e] We should see a decrease in Ford stock price today and potentially over the previous week (in case of leakage of information), but not over the next week