Analyze the following code:

```
public class Test {
public static void main(String args[]) {
NClass nc = new NClass();
nc.t = nc.t++;
}
}

class NClass {
int t;
private NClass() {
}
}```
a. The program has a compile error because the NClass class has a private constructor.
b. The program does not compile because the parameter list of the main method is wrong.
c. The program compiles, but has a runtime error because t has no initial value.
d. The program compiles and runs fine.

a You cannot use the private constructor to create an object.