Which of the conclusions can you make based on the passage?

The Cuban Missile Crisis began in 1962 when U. S. spy planes spotted Soviet missile installations under construction in Cuba. The missiles were capable of carrying nuclear weapons and were within range of major U. S. cities. A thirteen-day standoff began, during which President John F. Kennedy imposed a naval blockade of Cuba and demanded that the Soviets remove the weapons. Kennedy stated that any missile attack from Cuba would be regarded as an attack from the Soviet Union and would be responded to accordingly. Khrushchev later conceded, agreeing to remove the weapons if, in return, the United States pledged not to invade the island. Details from U. S. and Soviet declassified files and participants in the crisis have surfaced since the incident. Unknown to the U. S. government at the time, 40, 000 Soviet soldiers were stationed in Cuba and armed with nuclear weapons. Although Khrushchev's actions helped avert nuclear war, they made him appear weak to younger Soviet leaders who ousted him from power. Historians regard the crisis as the world's closest brush with the threat of nuclear war.

Kennedy's first concern during the crisis was the appeal of Communist ideas.

Nuclear war is the only way to win a cold war.

Kennedy knew that Khrushchev would back down.

Khrushchev's popularity increased at home.

The U. S. government did not know the full extent of the Soviet threat at the time.

The United States did not know how many Soviet troops were present in Cuba, so they did not know the full extent of the Soviet threat at the time

Was asked in this test : Social Studies Pre 1