Harrison is a manager at Delta Inc. $,$a computer manufacturing company.He believes that Delta should produce all computer components in$-$house rather than buying them elsewhere.Which of the following is a true statement that supports his belief?

A$)$ Making components in$-$house can help a firm maintain control of sensitive knowledge.

B$)$ Producing components in$-$house can help a firm develop production expertise with minimum time and effort.

C$)$ Producing components in$-$house can make it easy for a firm to achieve economies of scale.

D$)$ In$-$house producers have the same incentives as external suppliers to produce high$-$quality products.