Lecture 9 (Logic) Theorems of Logic and Group Theory

Which list contains exactly the three group axioms as presented in the lecture?

1. A.Associativity, commutativity, existence of identity
2. B.Closure, commutativity, existence of inverses
3. C.Associativity, distributivity, existence of identity
4. D.Associativity, existence of an identity element, existence of inverses