Match the following:
In the following, \([\mathrm{x}]\) denotes the greatest integer less than or equal to x .
\begin{array}{|l|l|l|l|}\hline & \text{Column - I} & & \text{Column - II} \\\hline \text{a}. & \mathrm{x}|\mathrm{x}| & \text{(i)} & \text {continuous in (-1, 1)} \\\hline \text{b.} & \sqrt{|\mathrm{x}|} & \text{(ii)} & \text{differentiable in (-1, 1)} \\\hline \text{c.} & \mathrm{x}+[\mathrm{x}] & \text{(iii)} & \text{strictly increasing in (-1, 1)} \\\hline \text{d.} & |\mathrm{x}-1|+|\mathrm{x}+1| & \text{(iv)} & \text{not differentiable at, at least one point in (-1, 1)} \\\hline\end{array}

1. A \(a-i, b-i i, c-i v, d-i i i\)
2. B \(a-i v, b-i i i, c-i, d-i i\)
3. C \(a-i i, b-i v, c-i i i, d-i\)
4. D \(\mathrm{a}-\mathrm{iii}, \mathrm{b}-\mathrm{ii}, \mathrm{c}-\mathrm{iv}, \mathrm{d}-\mathrm{i}\)