If DB2 detects a deadlock between application A and application B (each waiting for a lock held by the other one), what action will DB2 take?（）

• A、Rollback the transaction in both applications.
• B、Rollback the transaction in one of the two applications.
• C、Decrease the lock timeout value for both applications, thereby causing a lock timeout situation.
• D、Send a message to let the administrator know of the situation and decide which application or applications should be terminated.