Arcitura Education Exam S90.05A Topic 1 Question 22 Discussion

Your IT department has decided to take a "WSDL-first" approach to building services. They took this quite literally, and developed a WSDL definition before there was a corresponding XML schema to define the message structures. The following WSDL definition was created:

You are given the task of developing an XML schema that defines two messages to work with the WSDL definition shown above. The first message requests a price from the product catalog based on a "productID" element that is a string. The second message is the response, and it returns both the same "productID" element, as well as the price in a "currentPrice" element that is of type decimal. Which of the following schemas accomplishes this?