$\begin{array}{1 1}(A)\;135\\(B)\;125\\(C)\;150\\(D)\;175\end{array} $

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There are five digits 1,2,3,4 and 5.Every digit can be selected any number of times.Hence we can select first digit 5 times.The second digit 5 times and the third digit 5 times.

Hence the number of ways in which the selection of three digits can be made

$\Rightarrow 5\times 5\times 5$ ways

$\Rightarrow 125$ ways

Hence (B) is the correct answer.

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