If \( \bar{a}=b, c \in \mathbf{R} \), and \( |b|^{2}\mathrm{c} \), ...

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If \( \bar{a}=b, c \in \mathbf{R} \), and \( |b|^{2}\mathrm{c} \), then the equation \( z \bar{z}+a z+b \bar{z}+c=0 \)
(a) has no solution
(b) exactly two solutions
(c) infinite number of solution
(d) none of these
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