How much 0.8% NaCl solution must you add to 1 ml of 2% amphotericin solution to dilute it 1:100, and what is the final concentration of the amphotericin solution?
如果需要将1ml的2%的两性霉素1:100稀释需要加入多少0.8%的NaCl溶液？最后得到的两性霉素的浓度是多少？
A - 50 ml and 0.1%
B - 25 ml and 0.25%
C - 49 ml and 0.2%
D - 99 ml and 0.02%