int A = 2;
int B = 3;
int C = 4;


void setup() {
  // put your setup code here, to run once:
pinMode(A, OUTPUT);
pinMode(B, OUTPUT);
pinMode(C, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(A, 0 );
digitalWrite(B, 0 );
digitalWrite(C, 0 );

}