单项选择题
Which is the earliest extant Chinese materia medica text, compiled in the Eastern Han Dynasty, focusing on description of individual herbs?
A.Shen Nong Ben Cao Jing (Shen Nong’s Classic of the Materia Medica)
B.Ben Cao Jing Ji Zhu (Collection of ‘Commentaries on the Classic of the Materia Medica)
C.Xinxiu Bencao (Newly Revised Materia Medica)
D.Ben Cao Gang Mu (Compendium of Materia Medica)