Task: Question Answering
Input (English): Question: A certain barrel, which is a right circular cylinder, is filled to capacity with 60 gallons of oil. The first barrel is poured into a second barrel, also a right circular cylinder, which is empty. The second barrel is twice as tall as the first barrel and has twice the diameter of the first barrel. If all of the oil in the first barrel is poured into the second barrel, how much empty capacity, in gallons, is left in the second barrel?

 Option A: There is no empty capacity

 Option B: 100 gallons

 Option C: 300 gallons

 Option D: 420 gallons

 Option E: 840 gallons
Output (English): Option D