Tell me _______how it came about that you were 20 minutes late for class. You needn't go into details.  [ ]

A. in advance      

B. in brief    

C. in total  

D. in vain  

关于糠秕孢子菌性毛囊炎错误的是（）

A.糠秕马拉色菌是致病菌

B.是毛囊性皮肤真菌病

C.糠秕马拉色菌是人体正常菌群

D.糠秕马拉色菌可将毛囊内的甘油三酯分解为游离脂肪酸

E.治疗首选口服广谱抗真菌药物