Step 1: Concept
The median is the middle value of a sorted data set.
Step 2: Analysis
First, arrange in ascending order: 0, 2, 2, 4, 6, 8, 10, 12.
Step 3: Reasoning
The number of terms $n = 8$ (even). The median is the average of the 4th and 5th terms.
4th term = 4; 5th term = 6.
Median = $(4+6)/2 = 5$.
Step 4: Conclusion
The median is 5. Note: While the text mentions 6, the official key (2257) and calculation confirm 5.
Final Answer: (A)