单项选择题

有4个B类网络地址:183.69.16.254,183.69.17.1,183.69.32.254和183.69.33.1,如果子网掩码为 255.255.240.0,则以下说法中正确的是 (35)

A.183.69.16.254和183.69.32.254属于同一子网
B.183.69.17.1和183.69.32.254属于同一子网
C.183.69.16.254和183.69.33.1属于同一子网
D.183.69.32.254和183.69.33.1属于同一子网