Fogel purchased a television set for 900 from Hamilton Appliance. Hamilton took a promissory note ...

Fogel purchased a television set for 900 from Hamilton Appliance. Hamilton took a promissory note signed by Fogel and a security interest for the 800 balance due on the set. It was Hamilton's policy not to file a financing statement until the purchaser defaulted. Fogel obtained a loan of 500 from Reliable Finance, which took and recorded a security interest in the set. A month later, Fogel defaulted on several loans and one of his creditors, Harp, obtained a judgment against Fogel, which was properly recorded. After making several payments, Fogel defaulted on a payment due to Hamilton, who then recorded a financing statement subsequent to Reliable's filing and the entry of the Harp judgment. Subsequently, at a garage sale, Fogel sold the set for 300 to Mobray. Which of the parties has the priority claim to the set?
 a. Reliable
  b. Hamilton
  c. Harp
  d. Mobray