Table: 2009 - 10 mexican primera división season
Question: For teams in the Mexican Primera División season, what is the median difference between 2009 A season points and 2010 C season points?
Step 1 (Reasoning, Grounding): 2009 A season points, 09 a pts
Step 2 (Reasoning, Other Commonsense Reasoning): median for 2009 A season points
Step 3 (Reasoning, Other Commonsense Reasoning): median for 2010 C season points
Step 4 (Reasoning, Arithmetic): -, difference
Answer: 2