Task: Question Answering
Input (English): Question: 12 spheres of the same size are made from melting a solid cylinder of 16 cm diameter and 16 cm height. What is the diameter of each sphere?

 Option A: 4 cm

 Option B: 6 cm

 Option C: 8 cm

 Option D: 10 cm

 Option E: 12 cm
Output (English): Option C