If $\large\frac{1}{a},\frac{1}{b},\frac{1}{c}$ are in A.P., then the equation $a(b-c)x^2+b(c-a)x+c(a-b)=0$ has

Question

$\begin{array}{1 1} \text{(A) Real and distinct roots} \\ \text{(B) Real and equal roots} \\ \text{(C) No real roots } \\ \text{(D) cannot say } \end{array}$