Maynard Associates has 100 units of a certain product on hand currently. The demand forecast for the next two planning periods is 40 units each period. Maynard Associates has no plans for production of this product in the first planning period, but does plan to build 100 units of this product in the period after that. How much of this item would be in stock at the end of period 1 ("the first planning period")? a. 20 units b. 80 units c. 0 units d. 40 units e. 60 units