Given a text T, and several options, according to the question posed in the text T to choose the most appropriate option from the options as the answer, please directly output the most appropriate option, do not need to output the explanation.

The business risk of a particular company is most accurately measured by the company’s:
Option A:debt-to-equity ratio.
Option B:efficiency in using assets to generate sales.
Option C:operating leverage and level of uncertainty about demand, output prices, and competition.

Answer: C