A form contains two list boxes, one for countries and one for cities. When a user selects a country
from a list box, the form will populate the list of cities. An external database contains the list of

cities for each country.
Which configuration would cause the adaptor to execute when the user selects a country in the
first list box?

A.
Set Value adaptor on the Country list box

B.
Set Value adaptor on the City list box

C.
Data Source adaptor on the Country list box

D.
Data Source adaptor on the City list box