​Find the missing number '?' from among the given alternatives:

Center = (Left² + Top²) − (Right² − Bottom²)

Explanation:
Logic: Use given pattern (a² + b²) − (c² − d²)

Try correct sign adjustment:
(4² + 1²) − (5² + x²) = −12
17 − (25 + x²) = −12
17 − 25 − x² = −12
−8 − x² = −12
x² = 4 → x = 2

Final Answer:
2

Final Correct Option:
C