A school board in a district dominated by racial minorities determines that students learn better when taught in a gender-segregated environment. The board then chooses schools within its district designated to serve only boys and others only girls. If this action were challenged in court, what would the school board need to show to uphold the action?

A. The classification conceivably bears a rational relationship to a legitimate government interest

B. Nothing, because the classification does not involve any suspect classification

C. The classification is necessary to promote a compelling government interest

D. The classification has a substantial relationship to an important government objective.