On March $25$th$,2026,$ Ford unexpectedly announces it will buy$-$out tire manufacturer on September $1$st$,2026.$Everyone fully believes Ford. $$Also$,$ everyone thinks this is a great move for Ford! $$What can we expect to happen to Ford stock, given what we know about the efficient market hypothesis?

Question $4$ options:

a$.$Ford$\text{'}$s stock value will increase March $25$th; Ford's stock value will increase September $1$st

b$.$Ford$\text{'}$s stock value will increase March $25$th; Ford's stock value will not change much on September $1$st

c$.$Ford$\text{'}$s stock value will not change much on March $25$th; Ford's stock value will increase September $1$st

d$.$Ford$\text{'}$s stock value will not change much on March $25$th; Ford's stock value will not change much on September $1$st