合法的数组定义是( )

A、int a[3][ ]={0,1,2,3,4,5};

B、int a[ ][3] ={0,1,2,3,4};
C、int a[2][3]={0,1,2,3,4,5,6};
D、int a[2][3]={0,1,2,3,4,5};