Read the article and answer the question.
(adapted from http://www.english-online.at/news-articles/history/u2-spy)
According to the article, all the sentences are correct, except:
Questão
CFS - BCT
2017
VER HISTÓRICO DE RESPOSTAS
4000015533
A
Nowadays a new version of the U2 is operated as a spy plane.
B
The US Air Force built a secret area to work on the U2.
C
During the Cold War, the U2 was used as a spy plane.
D
The U2 could identify objects on the ground.