What responsibility did the federal government have in the crash of the Boeing 737 MAX equipped with MCAS?

Multiple Choice
A. Government bureaucrats had required the installation of the foreign-designed system on the Boeing.
B. The FAA had thoroughly tested MCAS and not found any flaws with it.
C. Government programmers had developed the MCAS. T
he FAA had given Boeing wide latitude in judging the safety of MCAS itself.
D.The FAA had forged the documentation approving the MCAS system.