Consider Revenues from Three of Megafy's 10 Wholesale Customers in 2015

Consider revenues from three of Megafy's 10 wholesale customers in 2015:
$$\begin{array} { | l | c | c | c | } \hline & \text { Customer } & \text { Customer } & \text { Customer } \\\hline & \text { A } & \text { B } & \text { C } \\\hline \text { Units sold } & 20,000 & 15000 & 3000 \\\hline \begin{array} { l } \text { List selling } \\\text { price }\end{array} & \$ 500 & \$ 500 & \$ 500\\\hline \text { Price discount } & \$ 50 & \$ 30 &\$ 100 \\\hline \text { Invoice price } & \$ 450 & \$ 470 & \$ 400 \\\hline \text { Revenues } & \$ \mathbf { 9 , 0 0 0 , 0 0 0 } & \$ 7,050,000 & \$ \mathbf { 1 , 2 0 0 , 0 0 0 } \\\hline\end{array}$$ What conclusion can be drawn from the above data? Which steps the manager of the company can take?