以下各组选项中,均能正确定义二维实形数组a的选项是( )
A. float a[3][4]; float a[][4]; float a[3][]={{1},{0}};
B. float a(3,4); float a[3][4]; float a[][]={{0},{0}};
C. float a[3][4]; static float a[][4]= {{0},{0}}; auto float a[0][4]={{0},{0},{0}};
D. float a[3][4]; float a[3][]; float a[][4];