You are a systems administrator who has recently installed and configured FTP 7 on a computer runningWindows Server 2008. You have enabled the FTP Over SSL （FTPS） option for the server by obtaining anSSL certificate from a trusted third-party issuer. Recently， the usage of the FTP site has increased， andusers are complaining about slow download performance. You want to configure SSL settings to encryptonly credentials and commands but not file-related information. You also want to optimize encryption performance. Which of the following settings changes should you make？（）

A. Select the Allow SSL Connections SSL Policy option.
B. Disable the Use 128-bit Encryption For SSL Connections Option.
C. Select the Require SSL Connections SSL Policy option.
D. Select the Custom SSL Policy option.