Task: Question Answering
Input (English): Question: If (a-b) is 6 more than (c+d) and (a+b) is 3 less than (c-d), then (a-c)

 Option A: 0.5

 Option B: 1

 Option C: 1.5

 Option D: 2

 Option E: 2.5
Output (English): Option C