Select ALL the statements that correctly describe the expression (2n + 4).5n.
1) 4 is a factor of the expression.
2) 5n is a quotient of the expression.
3) 5 is a coefficient of the term in the expression.
4) The sum of 2n and 4 is a factor of the expression.
5) The expression represents the sum of 2n and 4 . 5n.