the first picture answers the 2 questions thanks

Question 19 and 20 use the following information: In the following MRP planning schedule for Item J, indicate the correct net requirements, planned order receipts, and planned order releases to meet the gross requirements. Lead time is one week. What are the planned order receipts and planned order releases of Item J at period 4 ? 43 and 63 67 and 63 46 and 63 63 and 67 63 and 63 What is the net requirement of item J at period 2? 67 63 46 43 21