A toy manufacturer has an outstanding order of 1,000 units for one of its toys in week 7. The table below provides information about the components, on-hand inventory, and lead time.

Subscripts indicate quantity required for each parent. Assume lot-for-lot ordering. Below is the information about the toys: lop5 ITEM LEAD TIME ON-HAND INVENTORY COMPONENTS Toy 1 200 A(2), B(1)

A 2 500 E(1), F(3)

B 1 200 C(1), D(2)

C 2 150 D 3 50 G(2)

E 3 100 F 2 550 G 1 100

a) Develop a product structure for the toy.

b) Develop a time-phased structure.