A master production schedule quantity of 300 units will arrive in week 6. Weekly demand over weeks 3 through 10 is forecasted at 50 units. At present, orders have been booked in various quantities in weeks 1, 2, 3, and 4. What is available to promise for week 6?
A) 50
B) 6
C) 300
D) 100
E) cannot be determined without projected on-hand information