In the Sweatt and McLaurin Cases of 1950,the NAACP Evidenced

In the Sweatt and McLaurin cases of 1950,the NAACP evidenced a shift in the direction of what innovative tactic,which represented an important departure from earlier efforts?

A) attacking segregation in graduate schools before attacking it in public schools
B) insisting that segregated schools could only be constitutional if they were demonstrably equal in facilities
C) arguing that separate facilities were by their very nature unequal and unconstitutional
D) attacking segregation through legal cases rather than through economic boycotts