问题
Xishui lies _____the southeast of Hubei Province and ____the south of Luotian.They are good neighbours.— The population of Xishui is much bigger than that of Luotian.
A:in;on
B:in;in
C:to;in
D:to;on;
B:in;in
C:to;in
D:to;on;
正确答案是：
