Question du test React Native (Legacy)

Parmi les exemples suivants, quelle(s) manière(s) fonctionne(nt) pour créer un composant React Native ?

Code A:
import React from "react";
import {Text, View} from 'react-native';
class SomeComponent extends React.Component {
      render () {
            return (<View><Text>Some text</Text><View>);
      }
}
 
Code B:
import React from "react";
var SomeComponent = React.createClass(
      {displayName : "SomeComponent"},
      render: function() {
            var textElement = React.createElement(Text, null, "Some text");
            return React.createElement(View, null, textElement);
      }
);
 
Code C:
import React from "react";
var SomeComponent = () => {
      var textElement = "<span>Some text</span>";
      return ;
};