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Clarification on a mock question about Session Bean

Posts: 2
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This is the question (from Enthuware):

A stateless session bean S1 uses another stateless session bean S2 and requests a dependency injection using the following statement (contained in S1's code):
@EJB(name="ejb/S2", beanInterface=S2Local.class)

S2Local interface is as follows:

package com.enthu.ejbplus;
import javax.ejb.Local;
public interface SLocal {
String m1();

Given the above, complete the following S2Bean's code so that bean S1 will work as expected.

package com.enthu.ejbplus;
import javax.annotation.*;
import javax.ejb.*;

// insert lines here...

SessionContext sctx;

public String m1(){ return "hello!"; }

And this are the answers:

public class S2Bean implements S2Local {

public class S2Bean implements S2Local {

public class S2Bean {

public class S2Bean {

None of these.

Enthuware says that the correct answer is 2.

My dubt is for number 1, that is excluded with this reason:
This will not work because in the absence of 'name' in @Stateless, this bean will be associated with the name of S2Bean but S1 bean is looking for ejb/S2.

Binding the injected ejb by name, isn't done with beanName attribute??
The name attribut isn't used to bind an ejb reference to ENC entry name??


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