Which of the following did Quin Shi Huangdi not standardize?

A) The widths of cart axles
B) Currency
C) weights and measurements
D) the width and measurements

Please help and please give clear information 2 sentences and not long articles nor web pages. Thank You!

Quin Shi Huangdi, the first emperor of China, is known for his efforts to standardize various aspects of society. However, he did not standardize the widths of cart axles. To get this answer, you can consult reliable historical sources or encyclopedias that highlight Quin Shi Huangdi's standardization measures.

This isn't exactly what you need -- but I think it's the best you can get. However, I'll bet your text has just what you need for this question.

https://huangdiwaseffective.weebly.com/what-did-huangdi-standardize.html

This has more information.

http://www.history4kids.co/2013/07/a-program-of-standardization-in-ancient.html

I eat dics

I know it isn't currency, but I don't know the answer either :(