The ratio 12g Gui Zhi to 9g Bai Shao is expressed in Gui Zhi Shao Yao Zhi Mu Tang as which option?

• A. Gui Zhi 24g : Bai Shao 18g
• B. Gui Zhi 9g : Bai Shao 12g
• C. Gui Zhi 6g : Bai Shao 6g
• D. Gui Zhi 12g : Bai Shao 9g

Answer: (D)

This question tests how a given ratio corresponds to the actual amounts used in a traditional formula. The ratio 12 g Gui Zhi to 9 g Bai Shao simplifies to 4:3, and Gui Zhi Shao Yao Zhi Mu Tang specifies Gui Zhi and Bai Shao in exactly those amounts: Gui Zhi 12 g and Bai Shao 9 g. That means this pairing preserves the intended ratio as written in the formula.

Other expressions either change the stated amounts (e.g., 24 g and 18 g would keep the same 4:3 ratio but are not the actual amounts in the formula), invert the ratio (9 g Gui Zhi with 12 g Bai Shao gives 3:4), or use equal amounts (6 g and 6 g yields 1:1). Therefore, the correct expression is Gui Zhi 12 g : Bai Shao 9 g.