A customer has two DS8000 systems in their environment. One DS8000 has FlashCopy licensed while the other does not. The customer wishes to license FlashCopy on the second DS8000.  Which of the following describes the TDA requirement in this situation（）

• A、a pre-sale TDA is mandatory
• B、a pre-install TDA is mandatory
• C、a pre-install TDA is not mandatory since it is not FirstIn Customer Location （FICL）
• D、both pre-sale and pre-install TDAs are mandatory