如何在react中默认选中单选按钮？

constructor(props) {
  super(props);
  this.state = {
    isChecked: true // 默认选中
  };
}

render() {
  return (
    <div>
      <input
        type="radio"
        checked={this.state.isChecked}
        onChange={this.handleRadioChange}
      />
      <label>选项</label>
    </div>
  );
}

handleRadioChange = () => {
  this.setState(prevState => ({
    isChecked: !prevState.isChecked
  }));
};