In Response to the Supreme Court's Ruling in the Swann

In response to the Supreme Court's ruling in the Swann v Charlotte-Mecklenburg case, President Nixon

A) proposed that busing also be used to solve the de facto segregation of northern school systems
B) sent federal troops to ensure the peaceful integration of the Charlotte-Mecklenburg schools
C) urged the Charlotte-Mecklenburg school system to defy the Court's ruling
D) denounced the use of busing as a way to end segregated schools