Which of the following statements is NOT true about clarity in academic writing?
选项：

A:It is better to use simple language and avoid sentence structures that are too complicated.
B:It is necessary to keep a balance between abstraction and concreteness because too many abstract words may confuse readers.
C:Nouns are more formal than verbs, so writers should not use too many verbs.
D:Complex phrases are usually difficult to read and thus may not communicate ideas effectively.