Medium
If $\alpha, \beta$ are the roots of $ax^2 + bx + c = 0$ and $\alpha + \beta, \alpha^2 + \beta^2, \alpha^3 + \beta^3$ are in $G.P.$,where $\Delta = b^2 - 4ac$,then:
- A$\Delta \neq 0$
- B$b\Delta = 0$
- C$cb \neq 0$
- D$c\Delta = 0$
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