单选题：Which declaration of the two-dimensional array is **valid**?

Which declaration of the two-dimensional array is **valid**?
@[C](1)

A. int a[3][];
B. float a(3,4);
C. double a[1][4];
D. float a(3)(4);





A.int a[3][];
B.float a(3,4);
C.double a[1][4];
D.float a(3)(4);


答案：C