If \( a, b, c \) are in A.P. and \( |a|,|b|,|c|1 \), and
\[
\begin{array}{l}
x=1+a+a^{2}+\ldots ... VIDEO
If \( a, b, c \) are in A.P. and \( |a|,|b|,|c|1 \), and
\[
\begin{array}{l}
x=1+a+a^{2}+\ldots \infty \\
y=1+b+b^{2}+\ldots \ldots \infty \\
\mathrm{z}=1+c+c^{2}+c^{3}+\ldots \ldots \infty
\end{array}
\]
Then \( x, y, z \) shall be in
(a) A.P.
(b) G.P.
(c) H.P.
(d) None of these
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