Information About Gausen Company Is as Follows -Refer to the Figure

Information about Gausen Company is as follows:
$\begin{array}{lrr}&20X1&20X2\\\text { Output (units) } & 100,000 & 100,000 \\\text { Input quantities: } &\\\text { Materials (kg) } & 45,000 & 40,000 \\\text { Labour (hours) } & 25,000 & 20,000\\\text { Input prices: }\\\text { Materials (per kg) } & \$ 5 & \$ 6 \\\text { Labour (per hour) } & \$ 8 & \$ 9\\&20X1&20X2\\\text { Output (units) } & 10,000 & 9,300 \\\text { Input quantities: } &0 \\\text { Labour (hours) }&4,000&3,875\\\text { Input prices: }\\\text { Labour (per hour) }&\$7&\$8\end{array}$
-Refer to the figure.What is the partial operational productivity measure for labour for 20X1?

A) 4.25
B) 4.00
C) 2.22
D) 1.42