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.

Zimt AG wrote down the value of its inventory in 2017 and reversed the write-down in 2018. Compared to the ratios that would have been calculated if the write-down had never occurred, Zimt’s reported 2017 (periodic inventory system applied):
Option A:current ratio was too high.
Option B:gross margin was too high.
Option C:inventory turnover was too high.

Answer: C