Question: 7. st ringBuilder sbl = new StringBuilder (Duke); 8. string st r 1 = sbl.tost ring(); 9. 1/ insert code here 10 system, out, print

7. st ringBuilder sbl = new StringBuilder ("Duke"); 8. string st

7. st ringBuilder sbl = new StringBuilder ("Duke"); 8. string st r 1 = sbl.tost ring(); 9. 1/ insert code here 10 system, out, print (str1 == str2) ; Which code fragment, when inserted at line 9, enables the code to print true? A. String str2 str1; B. String str2new String (str1) C. String str2 sb1. toString 0 D. String str2 - "Duke

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