Target question: Is the median of Set B greater than the median of Set A?
Once we have a hunch that the statements might not be sufficient, we can start looking for conflicting cases.
Let's jump right to . . .
Statements 1 + 2 combined:
Given the information, many different cases are possible. Here are two:
Set A: 1, 2, 5, 100 (mean = 27, median = 3.5)
Set B: (median = 5)
Set C: 1, 2, 100 (median = 2)
In this case, the median of Set B IS greater than the median of Set A?
Set A: 1, 3, 7, 7, 100 (mean = 24, median = 7)
Set B: 7, 7 (median = 7)
Set C: 1, 3, 100 (median = 3)
In this case, the median of Set B IS NOT greater than the median of Set A?
Since we can't answer the target question with certainty, the combined statements are NOT SUFFICIENT, so the answer is E