So why option 3 is incorrect
I think the option refers to the identity of
ejb's in the client view. That is compared with "equals" [e.g. ejb1.equals(ejb2) ] and says wether two ejb's are meaningfully (!) identical. If you lookup two stateless session beans of the same type, they are allways "equal", while stateful session beans are never.
[ November 19, 2008: Message edited by: Ralph Jaus ]