Please supply more information; we don't all have the book. Is it Boyarsky and Selikoff? Which edition? I can't tell you anything useful because I don't what the question says.
Campbell Ritchie wrote:Please supply more information
Indeed.
@OP
I have Study Guide books for OCA and OCP (thanks to Jeanne), but those are for Java 8. Chapter 1, review question 6 looks intact to me, but it doesn't talk about any "distance".
Not even clear to me whether you suggest it is an errata or your guess as correct answer for aforementioned review question.