You recently observed a developer using the SecureString variable type in their workflow. What is a UiPath best practice

[answerhappygod]

You recently observed a developer using the SecureString variable type in their workflow.
What is a UiPath best practice relative to the use of SecureString?

A. Name of the SecureString variable should include the prefix "str_".
B. SecureString variable scope should be limited to the scope where it is created.
C. A workflow file should not contain more than one SecureString variable.
D. SecureString variable should be assigned to an argument.