Given: 3. import java.util.*; 4. class Business { } 5. class Hotel extends Business { } 6. class Inn extends Hotel { } 7. public class Travel { 8. ArrayList go() { 9. // insert code here 10. } 11. } Which, inserted independently at line 9, will compile? (Choose all that apply.)

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  1. return new ArrayList();

  2. return new ArrayList();

  3. return new ArrayList();

  4. return new ArrayList();

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Correct Option: B

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