Step 1: Choose the longest carbon chain containing the \(-\mathrm{OH}\) group.
The longest chain has four carbon atoms.
Hence, the parent hydrocarbon is
\[
\boxed{\text{butane}.}
\]
Step 2: Number the chain.
Numbering is done from the end nearer the hydroxyl group.
Thus,
\[
\boxed{\text{OH at carbon-2}.}
\]
The methyl substituents are present at
\[
2,\ 3,\ 3.
\]
Hence the name is
\[
\boxed{\text{2,3,3-trimethylbutan-2-ol}.}
\]
Therefore,
\[
\boxed{(A)}
\]
is the correct answer.