What happened early in John F. Kennedy's presidency at the Bay of Pigs in Cuba? 
 A.
 The Cuban people rose up and forced Soviet advisors to evacuate the island.
 B.
 A CIA-trained force of Cuban refugees launched a failed attempt to overthrow Fidel Castro.
 C.
 Soviet missiles shot down a commercial airliner that was flying from Miami to Havana.
 D.
 Fidel Castro led communist guerillas in an invasion that deposed the corrupt government.