What is the difference between the As-Is process model and the To-Be process model? Select one: a. The As-Is process model begins with what the process problem is, and the To-Be process model displays how the problem will be solved b. The process models are not related c. The As-Is process model begins with where to implement the solution, and the To-Be process model displays why the problem needs to be fixed d. Both process models determine when to solve the problem