How can end-to-end transactionality be achieved in a SOAP based message flow?

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How can end-to-end transactionality be achieved in a SOAP based message flow?
A . By selecting transaction Yes for JMS binding.
B . By having the SOAP call interact with a database transaction.
C . By having persistent sessions with SOAP over HTTP binding.
D . Interactions between SOAP operations must implement SOAP fault messages.

Answer: D