执行下面程序后，输出结果是（ ）。

1int main() {2   try {3      int age = -1;4      if (age < 0)5        throw age;6      cout << "A";7   } catch (const char *msg) {8      cout << "B";9   } catch (int value) {10      cout << "C" << value;11   }12   return 0;13}