25 Which sentence from the selection explains the historical context of why Katherine Johnson was a pioneer at NASA?
(8.5F)
A Katherine Johnson is an African American mathematician who worked for NASA
from 1953 until 1986.
B At age 18, Johnson graduated with very high grades and degrees in mathematics
and French.
C With the information she provided, astronauts walked on the moon for the first time
on July 20, 1969.
D In 2016, she received honorary doctorates in science from West Virginia University
and West Virginia State University.