Which statement about the consequences of the Spanish-American War is true?

Responses
Cubans gained their independence from Spain and established a monarchy.
American troops fled from Cuba after the war, resulting in the Spanish regaining control.
Cubans had to pay $20 million to Spain to acquire the Philippines.
Cubans gained their independence, but had to follow strict guidelines from the United States.

The statement "Cubans gained their independence, but had to follow strict guidelines from the United States" is true.