Kershaw Bookstore Had 600 Units on Hand at January 1 $€ 18$

Kershaw Bookstore had 600 units on hand at January 1, costing $€ 18$ each. Purchases and sales during the month of January were as follows:
$\begin{array}{lll}\text { Date }&\text { Purchases }&\text { Sales }\\\hline\text { Jan. } 14 && 450 @ € 28 \\\quad\quad17 & 300 @ € 20 \\\quad\quad25 & 300 @ € 22 & \\\quad\quad29 & & 300 @ € 32\end{array}$
Kershaw does not maintain perpetual inventory records. According to a physical count, 450 units were on hand at January 31.
The cost of the inventory at January 31, under the FIFO method is:

A) $€ 1,200$ .
B) $€ 8,100$ .
C) $€ 9,300$
D) $€ 9,600$ .