Which of the following is an appropriate procedure to perform when conducting an effective walkthrough for a business process? 1. Prepare for the walkthrough, which may include using whiteboarding techniques. II. Separately obtain an understanding of how IT affects the flow of transactions. III. Perform analytical procedures to determine whether management responses to probing questions are reasonable. IV. Inspect the trail of documents and evidence to understand the process. I and II O I and IV II and III III and IV