please, who is knowing the correct solutions, he/she can solve becuase this are the third time i upload same equation and i got the wrong answer

so please focuse on the each part of this task. as well, use the values and the data which given in the task.

thanks to you

Part A: (40 Marks) Given the following product tree (the quantities are shown between brackets in the next page): A (1) B (2) C (3) C(1) The following data for X, A, B and C is as follows: Stock Safety Stock Lot Size Lead Time 50 10 1 1 A 330 30 50 3 B 270 20 50 3 2000 250 100 The master production schedule calls for production of 40 X in period 1, 300 in period 5,600 in period 6, 100 in period 7. There is a scheduled receipt of 1500 of in week 3. 1. Calculate the MRP-explosion and write the steps of calculation 2. Discuss the limitations of MRP system. (20 Marks) (20 Marks)