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 current weighted average cost of capital (WACC) for Van der Welde is 10%. The company announced a debt offering that raises the WACC to 13%. The most likely conclusion is that for Van der Welde:
Option A:the company’s prospects are improving.
Option B:equity financing is cheaper than debt financing.
Option C:the company’s debt\/equity has moved beyond the optimal range.

Answer: C