If \( a, b, c \) are three distinct real numbers for which there exist \( x, y, z \) such that \...

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If \( a, b, c \) are three distinct real numbers for which there exist \( x, y, z \) such that
\[
\begin{array}{l}
x+y+z=1 \\
a x+b y+c z=t \\
a^{2} x+b^{2} y+c^{2} z=t^{2}
\end{array}
\]
then \( a^{3} x+b^{3} y+c^{3} z-t^{3}=P(t) \), polynomial in \( t \), number of solutions of \( P(t)=0 \) is
(a) 0
(b) 1
(c) 2
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