x² + y² - 4x + 6y + 4 = 0 എന്ന സമവാക്യം ഉള്ള വൃത്തത്തിന്റെ കേന്ദ്രം എവിടെയാണ്?
A(4, -3)
B(2, -3)
C(2, 3)
D(0, 1)
A(4, -3)
B(2, -3)
C(2, 3)
D(0, 1)
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