请问，以下哪些语句用于初始化一个数组？
请选择所有正确答案：
(A) int dayhigh={24,23,24,25,25,23,21};
(B) int dayhigh[]={24,23,24,25,25,23,21};
(C) int []dayhigh={24,23,24,25,25,23,21};
(D) int dayhigh[]=new int{24,23,24,25,25,23,21};