If the roots of the equation $$a(b - c)x^2 +b(c - a)x + c(a - b) = 0$$ are equal, then which of the following is true?

A

$$b = \frac{( a + c)}{ac}$$

B

$$\frac{2}{b} = (\frac{1}{a}) + (\frac{1}{c})$$

C

$$2b = (\frac{1}{a}) + (\frac{1}{c})$$

D

$$abc = ab + bc + ca$$