While it is essential that the text covers the subject adequately, it is also important that it is neither too detailed or too complex for the intended reader.()

A. for

B. nor

C. no

D. not

神州行品牌可办理以下哪些短信包月（）

A.2元包50条

B.5元包100条

C.50元包1000条

D.100元包2000条