Vue multiple options per loop

Trying to display multiple options in Vue2 for loop of a select.

Given an object with the structure;

{
    name: [
        'asc',
        'desc'
    ],
    price: [
        'cheapest',
        'expensive'
    ]
}

How to format the loop to get the output of;

<select>
    <option value="name:asc">name asc</option>
    <option value="name:desc">name desc</option>
    <option value="price:cheapest">name cheapest</option>
    <option value="price:expensive">name expensive</option>
</select>

Can’t work out the way to show the second option;

<select id="sortBy" class="form-control pr-3" v-model="sortBy">
    <option
        v-for="(options, sort) in sorting" :key="`${sort}`"
        v-bind:value="`${sort}:${options[0]}`"
    >
        {{ sort }} {{ options[0] }}
    </option>
</select>