如何在Vue中选中单选按钮

data() {
  return {
    selectedOption: null
  }
}

<div>
  <input type="radio" id="option1" value="option1" v-model="selectedOption">
  <label for="option1">Option 1</label>

  <input type="radio" id="option2" value="option2" v-model="selectedOption">
  <label for="option2">Option 2</label>

  <input type="radio" id="option3" value="option3" v-model="selectedOption">
  <label for="option3">Option 3</label>
</div>

data() {
  return {
    selectedOption: 'option2'  // 默认选中Option 2
  }
}