C# deserialize Xml file containing more than one root type element

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C# - How may I deserialize an xml file the has more than one type of root elements?
SampleFile.Xml Example below all contained in one file:

<?xml version="1.0"?>
<catalog>
   <book id="bk101">
      <author>Gambardella, Matthew</author>
      <title>XML Developer's Guide</title>
      <genre>Computer</genre>
      <price>44.95</price>
   </book>
   <book id="bk102">
      <author>Jeanette, Dasha</author>
      <title>Quack the Duck</title>
      <genre>Fantasy</genre>
      <price>5.95</price>
   </book>
</catalog>

<ServerConfig loggingEnabled="1">
  <Servers>
    <Server host="test1.example.com" port="9999" />
    <Server host="test2.example.com" port="8888" />
  </Servers>
</ServerConfig>

<Customer xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <NameList>Linguini</NameList>
  <Item>MACBook</Item>
  <Brand>Apple</Brand>
</Customer>

I've done a lot of serialize / deserializing but not with more than one type root element. I'd appreciate some help on this. Thanks ahead!