# Self review: Managing state in React

1. **True or false? When lifting state up, you need to move the useState from a child component to a parent component.**
    
    * <mark>True.</mark>
        
    * False.
        
2. **If the state variable holds an array or a string value, once you pass that state via props from a parent to a child, you can then read the length property from the received prop in the child component.**
    
    * <mark>True</mark>
        
    * False
        
3. **What's wrong with this code?**
    
    ```javascript
    import React from "react";
    import Fruits from "./Fruits";
    import FruitsCounter from "./FruitsCounter";
    
    function App() {
      const [fruits] = useState([
          {fruitName: 'apple', id: 1},
          {fruitName: 'apple', id: 2},
          {fruitName: 'plum', id: 3},
      ]);
    
      return (
        <div className="App">
          <h1>Where should the state go?</h1>
          <Fruits fruits={fruits} />
          <FruitsCounter fruits={fruits} />
        </div>
      );
    }
    
    export default App;
    ```
    
    * If you don't add the `setFruits` state-updating function when descructuring values from `useState`, the app won't compile.
        
    * There's nothing wrong with the provided code.
        
    * <mark>The useState call should be </mark> `React.useState`<mark>.</mark>