6. 已知 \(A = [a_{ij}]_{2 \times 2}\),其中 \(a_{ij} = |i - 2j|\),若 \(A^2 = [c_{ij}]_{2 \times 2}\),則 \(c_{11} + c_{22}\) 之值為何?
(A)2
(B)3
(C)4
(D)5

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統計: A(2), B(0), C(0), D(0), E(0) #3884180