Which sentence best describes the relationship between the US space exploration program and the environmental movement of the 1970s?

A.
The space missions to the moon in the late 1960s are widely credited for helping inspire the environmental movement of the 1970s.
B.
Widespread public concern over environmental pollution led scientists to speed up the Apollo 8 moon mission and other space missions.
C.
Air pollution created by the space program's rockets and space capsules created public concern that resulted in the passage of the Clean Air Act.
D.
Money spent on the space missions is widely credited for reducing subsequent government funding for environmental issues.