Which two MLB teams have the oldest and most intense rivalry, dating back to the sale of Babe Ruth after the 1919 season?

• A Cubs and Cardinals
• B Dodgers and Giants
• C Yankees and Red Sox ✓
• D White Sox and Cubs

The Yankees-Red Sox rivalry is rooted in the 1919 sale of Babe Ruth from Boston to New York, after which the Red Sox did not win a World Series for 86 years ΓÇö the 'Curse of the Bambino.'