When creating a BPMN activity model, which of the following is most accurate?

a. Modeling is an artistic endeavor; therefore different modelers given the same set of facts about a business process will likely develop very different models of the process.

b. The resulting BPMN activity model should closely match the structure of the subsequent database.

c. All activity models should include gateways.

d. Different modelers given the same set of facts about a busines process should develop similar models of the process.