Spring Puzzlers #02: Which statement is right?

• I don't have a clue :(

• It will fail during initialization as 'puzzle' scope is not properly configured

• A NullPointerException will be thrown at some point as we are going asynchronous

• I'll be a happy traveler, going to a single destination multiple times

• I'll be a happy traveler, going to multiple destinations

• The @Async annotation won't work as there's no TaskExecutor defined