Which of the following can be used to show the lexical feature"common use of abbreviations" of medical terms?

A. The word "administration" in the phrase "the administration of antibiotics" means 给药 rather than 行政，管理.
B. Kidney, nephr/o and ren/o all mean 肾脏。
C. Short forms like ER， ICU， HIV and so on are very often used in medical English.
D. Medical terms are named after a place, a scientist or a doctor.