If \[x=\sum\limits_{n=0}^{\infty }{{{a}^{n}}},\ y=\sum\limits_{n=0}^{\ – McqOptions

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1.	If \[x=\sum\limits_{n=0}^{\infty }{{{a}^{n}}},\ y=\sum\limits_{n=0}^{\infty }{{{b}^{n}},\ z=\sum\limits_{n=0}^{\infty }{{{(ab)}^{n}}}}\], where, then
A.	\[xyz=x+y+z\]
B.	\[xz+yz=xy+z\]
C.	\[xy+yz=xz+y\]
D.	\[xy+xz=yz+x\]
Answer» C. \[xy+yz=xz+y\]

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