gEs demo - question on valid inner class

I got this question in ge is mock exam:
Given the following class definition:
Class A {
protected int i ;
A( int i) {
this.i = i;
}
}
which of the following will be a valid inner class for this class?
...
C.
class B {
B() {System.out.println("i=" +i);}
}
The answer said the above is not a correct answer. But I tried to compile, it compile and run without any exception?
What's wrong? ge give the wrong answer?

Linda,
For the given class, the given inner class is valid. What I think is there may be someother information you would have forgotten to post. I am not sure. Can you post the exact qstn from the Exam?
The given code will produce two .class files in the current dir where it is compiled if no other redirection option is given while compiling. They are 1. A.class 2. A$B.class
regds
maha anna

It looks like the exam question is wrong. What is the URL for this "ge is mock exam"? And does this question have a number?

Sorry, there is a typo about the exam name. It's the gE's mock exam. I downloaded the evaluation edition. There is 15 questions in it.
About this question, the question body is like my first post. There is fives items for multi select, because I understand other four, I omit them. The C item is exactly as I posted.
So, the C should be right answer here?

Yup. I'll move this to Mock Exam Errata so others can find it in the future. Thanks.

I also attende that exam and i suppose that what xu i s telling is correct.
Can maha anna caretake this affair properly?

doesn't "i" need to be final in order for the nested class to reference it?

oops.
that's only for locals and args, right?