QWhich of the following is an example of a recursive function in Java?

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Tick every correct option, then press Check Answer.

• A

  
  public int factorial(int n) {
      if (n == 0) return 1;
      return n * factorial(n - 1);
  }
  

  ✔ ✖
• B

  
  public int factorial(int n) {
      int result = 1;
      for(int i = 1; i <= n; i++) {
          result *= i;
      }
      return result;
  }
  

  ✔ ✖
• C

  
  public static int gcd(int a, int b) {
      if (b == 0) return a;
      return gcd(b, a % b);
  }
  

  ✔ ✖
• D

  
  public static int gcd(int a, int b) {
      while (b != 0) {
          int temp = b;
          b = a % b;
          a = temp;
      }
      return a;
  }
  

  ✔ ✖

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