A should be the right answer
John's choices influenced the plot and end of story because of the choices been made of John.
However, unlike (point A), (point B) actually
Or some other buzz words are:
Inversely
Dissimilarly
Otherwise
Unequally
Contrarily
This is the bandwagon technique because they say things like "do what the rest of the country is doing" and other examples of bandwagoning.