What is the inverse z-transform of X(z)= ( frac{1}{1-1.5z^{-1}+0.5z^{-2}} ) if ROC is 0.5<|z|<1?

What is the inverse z-transform of X(z)= ( frac{1}{1-1.5z^{-1}+0.5z^{-

1.	What is the inverse z-transform of X(z)= ( frac{1}{1-1.5z^{-1}+0.5z^{-2}} ) if ROC is 0.5<\|z\|<1?
A.	-2u(-n-1)+(0.5)<sup>n</sup>u(n)
B.	-2u(-n-1)-(0.5)<sup>n</sup>u(n)
C.	-2u(-n-1)+(0.5)<sup>n</sup>u(-n-1)
D.	2u(n)+(0.5)<sup>n</sup>u(-n-1)
Answer» C. -2u(-n-1)+(0.5)<sup>n</sup>u(-n-1)

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