Task: Question Answering
Input (English): Question: Mixture D is 20% oil and 80% material B by weight. If 2 more kilograms of oil are added to the 8 kilograms mixture D, how many kilograms of mixture D must be added to make a 70% material B in the new mixture?

 Option A: A

 Option B: B

 Option C: C

 Option D: D

 Option E: E
Output (English): Option A