Jack George, CFA, does research about fina
题型：单项选择题
问题：
Jack George, CFA, does research about financial leverage and gathers the following information about a company (in millions):
| 2011 | 2010 | |
| Interest expense | $15 | $15 |
| Net profit margin | 12.0% | 9.0% |
| Total asset turnover | 2.0 | 2.2 |
A. decreased.
B. remained the same.
C. increased.
