$\text { Table 27b }$ -Assume Table 27a Represents Supply Schedules for Ford Explorers

$\text { Table 27b }$
$\begin{array}{ccc}\hline\text { Price } & \text { Quantity Supplied in } & \text { Quantity Supplied in } \\&\text { January } & \text { February }\\\hline \$ 35,000 & 55,000 & 60,000 \\\hline \$ 30,000 & 50,000 & 55,000 \\\hline \$ 25,000 & 45,000 & 50,000 \\\hline \$ 20,000 & 40,000 & 45,000 \\\hline \$ 15,000 & 35,000 & 40,000\\\hline\end{array}$
-Assume Table 27a represents supply schedules for Ford Explorers. What might account for the difference between the January supply schedule and the February supply schedule?

A) an increase in consumer income
B) a decrease in wages paid to Ford factory workers.
C) a decrease in consumer income.
D) an increase in the cost of glass used for windows in Ford Explorers.