多选题When defining a function activity, what is true about the Result Type?（） (Choose two.)AResult Type is optional.BResult Type is mandatory.CResult Type can be changed after it is assigned to the function activity.DResult Type should belong to the same item type as the function activity
多选题
When defining a function activity, what is true about the Result Type?（） (Choose two.)
A
Result Type is optional.
B
Result Type is mandatory.
C
Result Type can be changed after it is assigned to the function activity.
D
Result Type should belong to the same item type as the function activity
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