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Suppose a developer wants to create an automatic persistent timer that performs data validation every hour. Given the following stateless session bean: @Stateless Public class OrderVerificationBean { Private void verificationExternalOrders () { // do something } } What is the minimum modification you would need to make to the bean to create the automatic persistent timer?
Correct Answer: B
Explanation/Reference: Not D: Timers are persistent by default. If the server is shut down or crashes, persistent timers are saved and will become active again when the server is restarted. If a persistent timer expires while the server is down, the container will call the @Timeout method when the server is restarted. Nonpersistent programmatic timers are created by calling TimerConfig.setPersistent(false) and passing the TimerConfig object to one of the timer-creation methods.