A Salesman Earns $W(n)=500+175 n$ , Where $n$ Is the Number of Products Sold, And

A salesman earns $W(n) =500+175 n$ , where $n$ is the number of products sold, and $W(n)$ is the weekly wage in dollars. What does the number 500 represent? (Mark all that apply)

A) The slope
B) The vertical intercept
C) The salesman's base salary
D) The salesman's commission for each product sold