Which of the Following Statements Is True

Multiple Choice

Which of the following statements is true?

A) Service activities represent runtime activity that occurs within the underlying service logic.
B) Service activities represent design-time message exchanges that are established between SOAP-based Web services and defined as part of the operation definition within the WSDL definition.
C) Service activities represent runtime activity that occurs between services.
D) Service activities represent runtime activity that occurs between complex and simple XML Schema types.