Variations can be disruptive to operations and supply chain processes. They may result in additional costs, delays and shortages, poor quality, and inefficient work systems.

There are $4$ types we discussed. Which of the following matches this definition:

"Natural variation that is present in all processes. Generally, it cannot be influenced by managers."

Group of answer choices

structural variation in demand

variety of goods or services being offered

assignable variation

inconceivable variation

random variation