Read this: Agriculture and food and drink production continue to be major industries in the county, employing over 15,000 people. Apple orchards were once plentiful, and Somerset is still a major producer of cider. The towns of Taunton and Shepton Mallet are involved with the production of cider, especially Blackthorn Cider, which is sold nationwide, and there are specialist producers such as Burrow Hill Cider Farm and Thatchers Cider. Gerber Products Company in Bridgwater is the largest producer of fruit juices in Europe, producing brands such as "Sunny Delight" and "Ocean Spray." Development of the milk-based industries, such as Ilchester Cheese Company and Yeo Valley Organic, have resulted in the production of ranges of desserts, yoghurts and cheeses, including Cheddar cheese—some of which has the West Country Farmhouse Cheddar Protected Designation of Origin (PDO).

Which Somerset cheeses have earned the West Country Farmhouse Cheddar Protected Designation of Origin?
What is the answer? (If it cannot be answered, return "unanswerable")
unanswerable