Question 6 1 pts Which of the following cause an error in the given method definition? public static double scale(int x, double multiplier) { double scaled = x * multiplier; return scaled; System.out.println(x + " scaled by " + multiplier + " is " + scaled); The System.out.println() should use , instead of + to separate variables and String literals. O x is an int so the return type must be an int The System.out.println() is unreachable code and should not be placed after the return statement. The variable scaled is unnecessary and causes an error