The difference between a house wine and a proprietary wine is:

The difference between a house wine and a proprietary wine is:
 
  a. A proprietary wine is created, labeled, and sold under the restaurant's name. House wine does not have to be.
  b. A house wine is created, labeled, and sold under the restaurant's name. A proprietary wine does not have to be.
  c. They are the same, but proprietary wines are only served out of 750ml bottles whereas house wines are typically served out of larger formats such as boxes or magnums.
  d. House wines are exclusively available at that restaurant. Proprietary wines are available in multiple locations, even outside of the restaurant.
  e. None of these statements are accurate.