Question 4 What is the output of the following code? public dass Test[ public statie void main Stingl arge) t String s1 - new String( Welcome to Javal: String s2 -s1.toUpperCase0 if (s1 -s System.out printin('s1 and s2reference to the same String object): System out printin("s1 and s2have the same contents") System out printin("s1 and s2have different contents); else if (sl equals(s2) else D s1 and s2 reference to the same String object s1 and s2 have different contents s1 and s2 have the same contents