/** Sum values in an array [5 pts] Answer the following questions for this faulty program. (a) Explain what is wrong with the given code. Describe the fault precisely by proposing a modification to the code. @param x array to sum (b) If possible, give a test case that does not execute the fault. If not, briefly explain why not. * @return sum of values in x * @throws NullPointerException if x is null */ 1. public static int sum(int[] x) 2. { 3. int s = 0; 4. for (int i=0; i 0) 11 (a > 0) 7 m = 4; e = 2*b+d; 8 if (x > 5) else 9 a n = 3m; e = b+d; 24 return (e); 11 n - 4*m; 25} 12 int o = takeOut (m, n); 13 System.out.println ("O is: " + o): 14 ) 22 23 10 else b) Provide test inputs that satisfy all-coupling-uses (note that trash() only has one input)