The reason why PlastiPharm should care about excess inventory is:
This refers to the situation where there is a product that is yet to be sold due to the excess estimated demand for the product which leads to the overstock of the product.
With this in mind, we can see that PlastiPharm should be worried about the excess inventory because it can lead to the degradation of the raw materials as they are overstocked.
Read more about excess inventory here:
https://brainly.com/question/13829106