About Question com.enthuware.ets.scwcd.v5.2.289 :

[ETS User]

first option is ambiguous.
'listener class' may refer to the tag listener-class or to name of class.

[admin]

As you mentioned the name of the tag is listener-class, so it seems quite clear that the question is talking about instances of listener class as in java class not listener-class element.

[Guest]

Why is there an option : "None of these" when you have to select 2 options?
Pretty useless here imo.