Why did Brown vs Education overturn Plessy vs Fergusson?

A)It didn't. Segregation still exists,
B)Because although the classrooms were equal, the supreme court didn't want students
to be seperated
C)Because in Plessy vs Ferguson the supreme court decided that Plessy looks white
and therefor he shouldn't be treated like a minority
D)Because classroom weren't equal, Minorities had classrooms that were harmful to the
students, and it violated their 14th amendment rights