Which statement best describes Grace Hopper?

Question $29$ options:

a$)$

Grace Hopper was the first black woman astronaut.

b$)$

Grace Hopper was one of the "rocket girls" that served as "human computers" freeing the NASA engineers of mathematical hand calculations before the digital age.

c$)$

Grace Hopper invented the first computer compiler that allowed programs to be written in regular language and then translated for computers to understand.

d$)$

Grace Hopper led the team that created the onboard flight software for NASA's Apollo command modules and and lunar modules.