radio-blog-3.js

class UIComponent extends React.Component {
  handleChange = event => {};

  render() {
    return (
      <RadioGroup>
        <RadioOption
          name="size"
          value="m"
          selectedValue={this.props.tshirt.size}
          onChange={this.handleChange}
        >
          M
        </RadioOption>
        {/* two more of these with the respective props */}
      </RadioGroup>
    );
  }
}