Which statement is correct about the different types of construction sectors$?$

A$)$ The sectors remain distinct and do not interact.

B$)$ They cross over in many areas where the building may have more than one use; for example, a condominium with retail stores on the lower floors, offices on the middle floors, and residential units above the offices.

C$)$ They use basically the same process and materials; constructing a residential low$-$rise house is the e ${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}$ process as constructing large building.

D$)$ The drawings for these sectors are all done exactly the same way.