10. Solving the recurrence relation  using generating function G(z), which following parts are true? 
(A) G(Z)=(1+2)/(1-z-20z2)
(B) G(Z)=(-1-z)/(1-z-20z2) 
(C)
(D)
(E)

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統計： A(1), B(0), C(1), D(0), E(0) #2993399