Division X Sells Organic High-Gluten Flour to Division Y

Division X sells organic high-gluten flour to Division Y. Division X incurs costs of $0.375 per kilogram of flour. Division Y makes loaves of bread that sell for $2.50 each. Division Y incurs costs of $1.25 per loaf, excluding the cost of flour. Each loaf of bread uses one-half kilogram of flour.
What is the operating income per kilogram of flour for Division X if the transfer price is set at $0.625/kg?

A) $0.25
B) $0.4375
C) $0.625
D) $0.8125