Given that the units digits of \( A^{3} \) and \( A \) are the same, where \( A \) is a single d...

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Given that the units digits of \( A^{3} \) and \( A \) are the same, where \( A \) is a single digit natural number. How many possibilities can \( A \) assume?
(a) 6
(b) 5
(c) 4
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