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Upgrade to Java SE 8 OCP ( Java SE 6 and all prior versions) (1Z0-813)

Question : 5

Total: 8

public class App { 
  public static void main(String[] args) { 
    String s = "Java"; 
    String n = "SE"; 
    /* Line n1*/ 
    System.out.println(sf.apply(s, n)); 
  } 
}

Which code fragment, when inserted at Line n1, prints JavaSE?

BiFunction sf = (s1, n1) -> s1.concat(n1);
BiFunction sf = (s1, n1) -> s1.concat(n1);
Function sf = (s1, n1) -> s1.concat(n1);
Function sf = (s1, n1) -> s1.concat(n1);

Validate

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