You need to debug codeunit 80 – Sales Post on a sales order to ensure that a certain set of
lines are performed. How should you debug it?
A.
Start the debugger and select a session that is ready to post a sales order. The debugger 
starts when you choose Post (F9) on the ribbon menu.
B.
Only start the debugger and select a session that is ready to post a sales order.
C.
Set a breakpoint trigger in codeunit 80, and then select a session that is ready to post a 
sales order. The debugger starts when you press Post (F9) on the ribbon menu.
D.
Start the debugger and select a session that is ready to post a sales order. Then click the 
Set/Clear Condition button on the ribbon menu to mark codeunit 80 to be debugged.