Which method involves using an AttributeExposer before the custom transformer input and output port(s) to expose attributes?

Which method involves using an AttributeExposer before the custom transformer input and output port(s) to expose attributes?

• A. Double-click on the Transformer Input or Transformer Output port and check/uncheck the attributes
• B. Navigator > Transformer Parameters > Group By
• C. Tools > FME Options
• D. Use an AttributeExposer before the custom transformer input and output port(s)

Answer: (D)