1 <?xml version="1.0"?> 2 <storage-unit> 3 <storage-unit-enum value="(Not selected)" price="0"/> 4 <storage-unit-enum value="CD-ROM 48x" price="200"/> 5 <storage-unit-enum value="CD-RW 48x/24x/48x" price="400"/> 6 <storage-unit-enum value="DVD+-RW 8x" price="750"/> 7 </storage-unit>