A wildlife preserve is being planned for 3
题型：单项选择题
问题：
A wildlife preserve is being planned for 3,000 rhinoceroses. The preserve is to contain a total of 10,000 acres of watering area, plus 100 acres of grazing area for each rhinoceros. If the number of rhinoceroses is expected to increase by 10 percent, how many thousand acres should the preserve have in order to provide for the increased population ？（）
A.340
B.330
C.320
D.310
E.300