以下不正确的定义语句是().
A:double x[5]={2.0,4.0,6.0,8.0,10.0};
B:int y[5]={0,1,3,5,7,9};
C:char c1[]={'1','2','3','4','5'};
D:char c2[]={'\x10','\xa','\x8'};