Arizona Inc The Moving-Average Unit Cost of Raw Material X Inventory at Following

Arizona Inc. uses the perpetual inventory system, and recorded the following data pertaining to raw material X during January 2020: $$\begin{array}{l}\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\text { Units }\\\begin{array} { l l c c c c } \text { Date } & & \text { Received } & \text { Cost } & \text { lssued } & \text { On Hand } \\\text { Jan 1 } & \text { Inventory } & & \$ 4.00 & & 3,200 \\\text { Jan 11 } & \text { lssue (sold) } & & & 1,600 & 1,600 \\\text { Jan 22 } & \text { Purchase } & 4,000 & \$ 4.70 & & 5,600\end{array}\end{array}$$ The moving-average unit cost of raw material X inventory at January 31, 2020 is

A) $4.70.
B) $4.50.
C) $4.43.
D) $4.35.