单选题

class program { &...

Question

public class Test {

  public static int count = 0

  public static void main(String[] args) {
    int i
    i = x(8)
    System.out.println(count)
  }

  public static int x(int n) {
    count++
    if (n <= 3)
      return 1
    else
      return x(n - 2) + x(n - 4) + 1
  }
}

该程序最后输出结果是多少?

A. 9

B. 12

C. 18

D. 8