What is y displayed in the following code?
```
public class Test1 {
public static void main(String[] args) {
int x = 1;
int y = x = x + 1;
System.out.println("y is " + y);
}
}
```
a. y is 0.
b. y is 1 because x is assigned to y first.
c. y is 2 because x + 1 is assigned to x and then x is assigned to y.
d. The program has a compile error since x is redeclared in the statement int y = x = x + 1.
c. y is 2 because x + 1 is assigned to x and then x is assigned to y.
The = operator is right-associative.
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