publicclassTestString3{publicstaticvoidmain(String[]args){//insertcodehereSystem.out.println(s);}}Whichtwocodefragments,insertedindependentlyatline3,generatetheoutput4247?()
A. Strings=“123456789”;s=(s-”123”).replace(1,3,”24”)-“89”;
B. StringBuffers=newStringBuffer(”123456789”);s.delete(0,3).replace(1,3,“24”).delete(4,6);
C. StringBuffers=newStringBuffer(”123456789”);s.substring(3,6).delete(1,3).insert(1,“24”);
D. StringBuilders=newStringBuilder(”123456789”);s.substring(3,6).delete(1,2).insert(1,“24”);
E. StringBuilders=newStringBuilder(”123456789”);s.delete(0,3).delete(1,3).delete(2,5).insert(1,“24”);