I'm guessing you want to display the three variables A, B and C as a string. Javascript doesn't use the ',' operator for concatenation, you must use the '+' operator.
Since the values are numeric, you can't just use '+' by itself to make a string, since that would add the values together - you have to concatenate with strings in between:
res = A + ' ' + B + ' ' + C;
or you can put them in an array and join them:
res = [A, B, C].join(' ');
or you can dump the array directly to the console without joining it as a string:
res = [A, B, C];
console.log(res);