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If variable can take any integral values from $0$ to $n$, where $n$ is a constant integer, then the variable can be represented as a bits field whose width is the integral parts of

(a) $\log_{2}(n)+1$

(b) $\log_{2}(n+1)+2$

(c) $\log_{2}(n-1)+1$

(d) None of these

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