List the first four main characters of Ann M. Martin's "The Baby-Sitters Club" books.
Kristy Thomas, Mary Anne Spier, Claudia Kishi, and Stacey McGill
### Instruction: List the first four main characters of Ann M. Martin's "The Baby-Sitters Club" books.
### Context: 
### Answer: Kristy Thomas, Mary Anne Spier, Claudia Kishi, and Stacey McGill</s>