How do Ryder Cup teams decide which golf ball to use in alternate shot?

A subtle rule change makes a massive difference in foursomes also known as alternate shot - at the Ryder Cup.

Original Source:

https://golfweek.usatoday.com/story/sports/golf/ryder-cup/2025/09/26/how-do-ryder-cup-teams-decide-golf-ball-alternate-shot-foursomes/86346060007/