The following program displays __________.
```
public class Test {
public static void main(String[] args) {
String s = "Java";
StringBuilder buffer = new StringBuilder(s);
change(buffer);
System.out.println(buffer);
}
private static void change(StringBuilder buffer) {
buffer.append(" and HTML");
}
}
```
a. Java
b. Java and HTML
c. and HTML
d. nothing is displayed
b. Java and HTML
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