You work in an international company which is named TXTWIN. And you’re in charge of the company network and use Microsoft BizTalk Server 2006 R2.
There’s an orchestration with a single receive port. The messages are routed to the orchestration when they’re received by the port. As the message arrives and leaves the receive port, you must be able to track the content of each message. So what should you do?

A.
You should open the orchestration using the BizTalk administration console.
In the orchestration properties, select the Message send and receive check box in the Track Events section.

B.
You should open the receive port using the BizTalk administration console.
In the receive port properties, select the Request message before port processing and the Request message after port processing check boxes.

C.
You should open the orchestration using the BizTalk administration console.
In the orchestration properties, select the Incoming messages check box and the Outgoing messages check box in the Track Message section.

D.
You should open the receive port using BizTalk Explorer.
Select the Before Receive check box in the Tracking Type property of the receive port.
Open the receive port using the BizTalk administration console.
Before port processing check box, select the Request message in the receive port properties.

Explanation:
BURGOS: mnemo: “to track the content” = “… Request message after port …”