下面程序的输出结果是？package algorithms.com.guan.javajicu;  public class TestDemo {      public static String output ="";      public static void foo(int i){         try{             if(i == 1){                throw new Exception();             }         }catch(Exception e){             output += "2";             return ;         }finally{             output += "3";         }         output += "4";      }         public static void main(String[] args) {         foo(0);         foo(1);         System.out.println(output);     }  }

• A.出错

• B.342

• C.34234

• D.3423