The Notion of "Level" of Design Components Is Useful in Componential

The notion of "level" of design components is useful in componential design. Which of the following description is appropriate about the level of design components?

A) As a design element, text can only be examined at the level of a character;
B) In the eyes of a graphic designer and a business analyst, graphic objects are all considered to be low-level components;
C) Higher-level design components usually enable more general functions than lower-level components;
D) Lower-level design components are developed with higher-level building blocks;
E) Only high-level design components have four levels of interaction.