Let a, b, c be distinct complex numbers with |a|=|b|=|c|=1 and z₁, z₂ be the roots of the equation az²+bz+c=0 with |z₁|=1. Let P and Q represent the complex numbers z₁ and z₂ in the Argand plane with ∠POQ=θ, o°<180∘ (where O being the origin).Then
A.b²=ac, θ=2π/3
B.θ=2π/3,PQ=√3
C.PQ=2√3, b²=ac
D.θ=π/3, b²=ac
