What is a weakness of a simple structure?

Question $11$ options:

A$)$

Functional specialists become insulated and have little understanding of what other units are doing.

B$)$

Reliance on a single person is risky.

C$)$

Pursuit of functional goals can cause managers to lose sight of what is best for the overall organization.

D$)$

Duplication of activities and resources increases costs and reduces efficiency.