Plz do this on urgent basis i need the answer of part b I have only 1 hour

Q3: (10) For instance, you are the inventory manager for the biggest store owned by Nadeem Computers. You are very busy one day when Ali, an auditor from the accounting firm employed by Nadeem Computers, arrives and asks for assistance in determining the store's physical inventory on hand. You are overwhelmed with work and tell Ali that you do not have the time, or the personnel needed to assist her in this task. You are also annoyed because you were not told that he was coming today to complete the physical inventory count. Further, Nadeem computer record the inventory through weighted average method in 2018 and in current year 2019 the information as per record showing that inventory is recorded through FIFO method. a. What should you do and why? b. What will be the biggest problem the auditor will catch and why