Let (Z, *) be an algebraic structure, where Z is the set of integers and the operation * is defined by n * m = maximum (n, m). Which of the following statements is TRUE for (Z, *) ?

Let (Z, *) be an algebraic structure, where Z is the set of integer

1.	Let (Z, ) be an algebraic structure, where Z is the set of integers and the operation is defined by n * m = maximum (n, m). Which of the following statements is TRUE for (Z, *) ?
A.	(Z, *) is a group
B.	(Z, *) is a monoid
C.	(Z, *) is an abelian group
D.	None of these
Answer» E.