An analyst does research about net profit
题型：单项选择题
问题：
An analyst does research about net profit margin. A company has only fixed rate debt outstanding and reports its debt using the fair value option. Which of the following statements is most accurate when market interest rates decrease（）
A. The company's net profit margin decreases.
B. The company's net profit margin remains the same.
C. The company's net profit margin increases.
