According to the definition used to build the whole numbers, what set results when zero is added to the counting numbers?

1. The counting numbers are 1, 2, 3, and so on, used to count objects. 2. Adding zero to that list forms a new, larger set of numbers. 3. That new set, 0, 1, 2, 3, and so on, is defined as the set of whole numbers. _Source: OpenStax Elementary Algebra (CC BY 4.0), Ch 1 "Foundations", section 1.1 Introduction to Whole Numbers_