问题如下：
The net profit margin ratio and financial leverage ratio can be calculated from the:
选项：
A.Common-size income statement and common-size balance sheet.
B.Common-size income statement only.
C.Common-size cash flow statement only.
解释：
A is correct.
Net profit margin= net income/ net revenue-----comes from common-size income statement.
Financial leverage= asset/ equity------comes from common-size balance sheet.
Financial leverage= asset/ equity------comes from common-size balance sheet. common size balance sheet 不是用各项除以total asset吗？
