55 執行下列 Visual Basic 程式片段，變數 S(3) 的值為何？
Dim S(10) as String
Dim K as Integer
S(0)="a"
For K=1 to 3
S(K)=S(K-1)&"b"&S(k-1)
Next K

(A) "aba"
(B) "abababa"
(C) "abababaabababa"
(D) "abababababababa"

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