Projected Available Inventory Calculation Complete the grid in Figure 11,8.1.1.
$$
\begin{array}{|l|r|r|r|l|l|}
\hline \text { Date } & \text { Entry } & \text { Issue } & \text { Balance } & \text { Text } & \text { Order ID } \\
\hline \text { 01 Jan } & & & 1000 & \text { stock on hand } & \\
\hline \text { 05 Jan } & 100 & & ? & \text { replenishment } & 1012897 \\
\hline \text { 14 Jan } & & 1050 & ? & \text { customer Smith } & 1028972 \\
\hline \text { 15 Jan } & ? & ? & 500 & ? & 1029538 \\
\hline \text { 16 Jan } & & 150 & ? & \text { customer Adams } & 1032687 \\
\hline
\end{array}
$$
a. What is the available inventory without any restrictions along the time axis?
b. What is the additional available inventory after order 1029538 ?
c. Which receipt could be deferred?
d. Furthermore, the following orders are planned:
- Customer order ID 1042158 of 500 units on January 20
- Stock replenishment order ID 1043231 of 500 units on January 22 Does this situation lead to a problem? If so, how can it be solved?