Using the TIBCO General Interface and Google Web Toolkit Preview tabs in TIBCO Business Studio, how are forms tested?

Using the TIBCO General Interface and Google Web Toolkit Preview tabs in TIBCO Business Studio, how are forms tested?
A . by connecting to the ActiveMatrix BPM server node so that the Workspace and Openspace client interfaces can be used from within TIBCO Business Studio to debug the forms
B . by displaying the code that is generated by the forms functionality and can be stepped through with the debugger
C . by displaying the forms as they will appear at runtime allowing the designer to input data to see how the form behaves
D . by deploying the forms to the ActiveMatrix BPM server node in order to execute and test them

Answer: C