Read the section “First Astronaut To Orbit Earth Relies On Johnson.” Which sentence from the section shows WHY John Glenn asked Katherine Johnson to check flight path calculations herself? A Johnson analyzed data, or information from NASA flight tests. B One day in 1962, John Glenn was about to become the first astronaut to make that flight. C The IBM computer calculated the spacecraft's trajectory, or the path that a spacecraft is supposed to follow. D However, Glenn did not completely trust the computer.