title: Magento : How to retrieve option information from a bundled product?
body: <p>I have a bundled Product that contains 3 virtual products as options.</p>
  
  <p>I have an observer that is listening to an event when an item is added to the cart and I'm having a hard time figuring out how to get the option information that I selected when looking at the product:
  the start of the observer looks like this:</p>
  
  <pre><code>public function checkSubscriptionHierarchy(Varien_Event_Observer $observer) {
  $event = $observer-&gt;getEvent();
  $product = $event-&gt;getProduct();
  
  ...
  </code></pre>
  
  <p>the call to $product->getSku() returns the sku of the bundle product.  I'd love to be able to grab the sku of the option that I selected, but cannot figure out how to do that.</p>
  
  <p>Thanks!</p>