1. interface DoStuff2 { 2. float getRange（int low， int high）； } 3. 4. interface DoMore { 5. float getAvg（int a， int b， int c）； } 6. 7. abstract class DoAbstract implements DoStuff2， DoMore { } 8. 9. class DoStuff implements DoStuff2 { 10. public float getRange（int x， int y） { return 3.14f； } } 11. 12. interface DoAll extends DoMore { 13. float getAvg（int a， int b， int c， int d）； } What is the result？（）
- A The file will compile without error.
- B Compilation fails. Only line 7 contains an error.
- C Compilation fails. Only line 12 contains an error.
- D Compilation fails. Only line 13 contains an error.
- E Compilation fails. Only lines 7 and 12 contain errors.
- F Compilation fails. Only lines 7 and 13 contain errors.
- G Compilation fails. Lines 7， 12， and 13 contain errors.