Finish the following sentence with the best choice: how to get rid of foam when cooking jam

Choices:
- add a small pat of sour cream when cooking fruit for jams and jellies, you won’t have any foam to skim off the top.
- add a small pat of butter when cooking fruit for jams and jellies, you won’t have any foam to skim off the top.

Answer:
add a small pat of butter when cooking fruit for jams and jellies, you won’t have any foam to skim off the top.