Because of the Electoral College, presidential candidates generally spend most of their time and resources in ______.
a. states where there are competitive local races so that they can raise money for their own general-election campaigns
b. competitive states, especially large ones
c. coastal and border states because they are the so-called blue states
d. California, Texas, and New York because they are the biggest states
e. states where they have a comfortable lead in order to extend that lead