9. Suppose num is a private integer. Which of the following is its mutator (set) method? (a) public void setNum(int num) { (c) public int setNum(int num) { System.out.println(num); return num; } (b) public void setNum(int num) { this.num = num; } (d) public int setNum(int num) { return this.num + num; } 10. Which of the following loops print the positive numbers that are less than 100 and are divisible by 5? (a) for(int i=1; i