After the Brown Decision, What Was the Status of the Ability

After the Brown decision, what was the status of the ability to regulate de jure and de facto segregation in public educational settings?

A) De jure segregation was banned; de facto segregation was not.
B) De facto segregation was banned; de jure segregation was not.
C) De jure and de facto segregation were banned.
D) De jure and de facto segregation were banned in elementary schools but not in secondary schools.