Which two statements are true about associative arrays and nested tables?

Which two statements are true about associative arrays and nested tables? (Choose two.)

A.
Only associative arrays can hold an arbitrary number of elements.

B.
Only associative arrays can use numbers and strings for subscripts.

C.
Both associative arrays and nested tables can hold an arbitrary number of elements.

D.
Both associative arrays and nested tables can use numbers and strings for subscripts.