MRP for two end items X and Y is to be completed. The gross requirements for Item X are 130 at the beginning of Week 6 and 220 at the beginning of Week 7. The gross requirements for Item Y are 50 at the beginning of Week 6 and 170 at the beginning of Week 7. The product structure for the two items is given below.

Item X requires 2 units of A and one unit of C. Item Y requires 1 unit of A and two units of B. Each unit of B requires one unit of C. Note that items A and C appear on both product structures. The lead time for each item is specified in the product structure: The lead time for Items X, B and C is 2 weeks; for Items Y and A is 1 week. The on-hand inventory for item A at the beginning of week 1 is 176.

Using the MRP template (on Moodle) that you have been asked to have accessible in the instructions for this exam, determine the net requirements and planned order releases for Items X, Y, A, B, and C and then answer the following four questions that ask for the planned order releases for Items A, B and C in specific weeks.

(a) What is the planned order release for item A in week 3?

(b) What is the planned order release for item A in week 4?

(c) What is the planned order release for item B in week 4?

(d) What is the planned order release for item C in week 2?

x [LT 2] Y [LT 1] B (2) A (2) [LT 1) C (1) [LT 2] A (1) [LT 1] [LT 2] C (1) [LT 2]