Really don't know the answer, please give me a help. Thanks in advance!! While testing a Session bean configured with "Bean Managed", a developer discovers that a TransactionRolledBackException is being thrown by a call to a method on an Entity Bean. The Session bean, prior to calling the method, explicitly started the transaction. Possible causes for the exception are that the: a) entity bean method is throwing a checked exception. b) entity bean method is throwing an un-checked exception. c) entity bean is configured with a transaction attribute of "Not Supported". d) entity bean method is throwing an exception and the entity bean is configured with a transaction attribute of "Requires New" Multiple Select - Please select all of the correct answers (this question has 2 correct choices).