How do You Express “Not Good” in Mandarin Like a Native? (Elementary)

If you want to be modest about your Chinese say, “My Chinese is not good.” Which of the following is NOT an authentic way to express this?
A. 我的中文很糟糕。(Wǒ de Zhōngwén hěn zāogāo.)

B. 我的中文很差。(Wǒ de Zhōngwén hěn chà.)

C. 我的中文不好。(Wǒ de Zhōngwén bù hǎo.)

Not sure about the answer? Not to worry, just take a look at this article How Good Really is Mark Zuckerberg’s Mandarin? to figure out the correct answer!