A developer wants to achieve the following two behaviors for an EJB 3.0 session bean:
(1) If the client calls a business method with a transaction context, the container will invoke the enterprisebean's method in the client's transaction context.
(2) If the client calls a business method without a transaction context, the container will throw the
javax.ejb.EJBTransactionRequiredException.
Which transaction attribute should be used?
a. MANDATORY
b. SUPPORTS
c. NOT_SUPPORTED
Answer: A
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