Let $\vec{P}=\left(p_{1}, p_{2}, p_{3}\right)$ Give the Profit a Salesman Makes from Selling Three Different

Multiple Choice

Let $\vec{P}=\left(p_{1}, p_{2}, p_{3}\right)$ give the profit a salesman makes from selling three different models of computers. Let $\vec{S}=\left(s_{1}, s_{2}, s_{3}\right)$ give the number of each computer model sold each week. What does $\vec{P} \cdot \vec{S}$ represent?

A) A scalar giving the total profit for one week from selling all three models of computers.
B) A scalar giving the average profit for one week from selling each computer model.
C) A vector giving the profit for one week for the three models of computers.
D) A vector giving the average profit for one week for the three models of computers.