Given the following method definition. What will happen if you call the method with concatenate$("$Hello$","5")$;

public String concatenate$($String a$,$ String b$)$

A$)$ It will concatenate "Hello" and $5.$

B$)$ It will concatenate "Hello" and $"5".$

C$)$ It will cause an error.

D$)$ It will implicitly convert $5$ to a string and concatenate.