vue reactive でセレクトボックスのデータの受け取る方法について

<select v-model="form.tag" name="tag" id="tag">　　
<option value="A">A</option>
<option value="b">B</option>
<option value="c">C</option>
</select>

<script>
import { reactive  } from 'vue'
import useProducts from '../../composables/products'
 export default {
     setup() { 
        const form = reactive({
            name: '',
            tag: '',
            description: ''
        })
        const { errors, storeProduct } = useProducts()
        const saveProduct = async () => {
               await storeProduct({ ...form})
        }
        return {
            form,
            errors,
            saveProduct
        }
     }
 }
 </script>