Which of the Following Statements Is True Regarding the Concept

Which of the following statements is true regarding the concept of a learning curve?

A) As additional units are produced, it will require the same amount of time, but cost per unit will decrease.
B) As additional units are produced, each additional unit will require less time, and thus, will result in cost savings.
C) As additional units are produced, the amount of time required may increase or decrease depending on the training of the production worker.
D) As additional units are produced, each additional unit will require less time, but the cost will increase per unit due to increased training costs for the production worker.