11. If the interval of convergence for power series 5e9d427025c10.jpg is (-2,2) , then the interval of convergence for power series 5e9d42a75d368.jpg is : 


(A) (−√2, √2)
(B) (−2, 2)
(C) (0, 4)
(D) (1− √2,1+ √2)
(E) (−1,1)

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統計： A(0), B(0), C(0), D(2), E(0) #2264875