Select does not show the option selected

ionic-v1
1

I have this template, builded with this code.

<div class="row">
    <div class="col col-25">
        <label class="item item-input item-select" style="height: 100%;">
            <select>
                <option selected>V</option>
                <option>E</option>
                <option>P</option>
                <option>J</option>
            </select>
        </label>
    </div>
    <div class="col">
        <label class="item item-input" style="height: 100%;">
            <input required>
        </label>
    </div>
</div>

As you can see, I put the select in a column which occupies 25% of the row, and now the Select doesn’t show its options, how can I solve it?