500
This sentence shows the correct use of punctuation:
1. My mother plays three instruments well, French horn, piano, and saxophone.
2. My mother plays three instruments well. French horn, piano, and saxophone.
3. My mother plays three instruments well; French horn, piano, and saxophone.
4. My mother plays three instruments well: French horn, piano, and saxophone.
What is My mother plays three instruments well: French horn, piano, and saxophone.