Question: What is the output of this program? class output { public static void main(String args[]) { StringBuffer s1 = new StringBuffer(Hello); s1.setCharAt(1,x); System.out.println(s1); } }

What is the output of this program?

class output {

public static void main(String args[])

{

StringBuffer s1 = new StringBuffer("Hello");

s1.setCharAt(1,x);

System.out.println(s1);

}

}

a) xello
b) xxxxx
c) Hxllo
d) Hexlo

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