All parts can be ordered using lot-for-lot ordering. (1) If 50 units of Alpha are to be assembled, how many additional units of S will be needed? (2) An order for 100 units of Alpha is scheduled to be shipped at the start of week 9. When is the earliest that any particular component must be started so that the order for Alpha will be ready to ship?

ItemLT On-Hand Alpha 2 0 Alpha 4 15 3 30 3 30 1 10 2 30 1 100 H(3) M(2) P(2) W(2) S(2) B(2) W(4) S(2)