An analyst gathered the following data about a company: Current liabilities are $ 300. Total debt is $ 900. Working capital is $ 200. Capital expenditures are $ 250. Total assets are $ 2000. Cash flow from operations is $ 400. If the company would like a current ratio of 2, they could :（）

A. decrease current assets by 100 or increase current liabilities by 50.

B. decrease current assets by 100 or decrease current liabilities by 50.

C. increase current assets by 100 or decrease current liabilities by 50.

男性，46岁。四肢麻木无力2年。2年前无诱因出现颈背部酸痛不适，伴双手麻木无力。半年后出现双手麻木逐渐向双上臂、双下肢发展，伴四肢无力。查体：C₅平面以下皮肤痛、温觉减退。四肢肌容积正常，四肢肌力4级，肌张力增高，双侧肱二、三头肌反射，膝、跟腱反射均亢进，双侧巴氏征阳性。提示：结合病史、体征。

Brown-Square综合征包括下列哪些征象（）

A.同侧损伤平面以下痛温觉消失

B.同侧损伤平面以下运动消失

C.同侧损伤平面以下深感觉消失

D.同侧损伤平面节段性痛觉温觉消失

E.对侧损伤平面以下1～2节段痛温觉消失

F.同侧损伤平面运动消失