多选题 Given:
1. import java.util. *;
2. class Radio {
3. String getFreq() {return "97.3"; }
4. static String getF() {return "97.3"; }
5. }
6. vclass Ham extends Radio {
7. String getFreq() {return "50.1"; }
8. static String getF() {return "50.1"; }
9. public static void main(String[] args) {
10. List＜Radio＞ radios = new ArrayList＜Radio＞();
11. radios.add(new Radio());
12. radios.add(new Ham());
13. for(Radio r: radios)
14. System.out.print(r.getFreq() + " " + r.getF() + " ");
15. } }
What is the result?