A Company Has Two Departments,Aa and Bb,that Incur Delivery Expenses $\begin{array} { c c c } & \text { A a } &&& \text{ B b } \\\end{array}$

A company has two departments,Aa and Bb,that incur delivery expenses.An analysis of the total delivery expense of $9,000 indicates that Dept.Aa had a direct expense of $1,000 for deliveries.None of the $9,000 is a direct expense to Dept.Bb.The analysis also indicates that 60% of regular delivery requests originate in Dept.Aa and 40% in Dept.Bb.The delivery expenses that should be charged to Dept.Aa and Dept.Bb,respectively,are:
$\begin{array} { c c c } & \text { A a } &&& \text{ B b } \\\end{array}$
A. $\begin{array} { c c c } & \$ 4,500 & \$ 4,500 \\\end{array}$
B. $\begin{array} { c c c } & \$ 5,800 & \$ 3,200 \\\end{array}$
C. $\begin{array} { c c c } & \$ 5,500 & \$ 3,500 \\\end{array}$
D. $\begin{array} { c c c } & \$ 5,500 & \$ 4,500 \\\end{array}$
E. $\begin{array} { c c c } & \$ 5,400 & \$ 3,600\end{array}$