As the U.S. military evacuated Saigon in the Spring of 1975, President Gerald Ford approved Operation Babylift, the plan to transport thousands of Vietnamese children to adoptive parents in the West, hundreds of them at a time, before the U.S. was forced out of the country.

Based on that paragraph can we conclude that this sentence is true?
Saigon was evacuated in 1974. 

pick from the following.
 -Yes.
 -It's impossible to say.
 -No.
No