Given this Express.js route handler:

Given this Express.js route handler:

app.get('/products/:id', (req, res) => {
  const products = { '100': 'Laptop', '200': 'Phone' };
  const product = products[req.params.id];
  if (!product) {
    res.status(404).send('Product not found');
  } else {
    res.send(product);
  }
});

What will be the HTTP status code if a client requests /products/300?