The confeds drove the union into a defensive position ya heard, but after realizing the union's power level was too strong, general lee and the rest of his Confederate squad was like "oh naw b" and they retreated, leaving the union still standing. (so the answer is B. papi)
The Article 5 is often quoted as "an Attack against one of us is an attack on all" - this means that the treaty requires attacking <span>a. a nation under attack.</span>