Which two distinct configurations ensure that a user provides a valid postal code?

An application must validate postal codes for Canadian customers to match the pattern A1A 1A1, where A represents a letter, and 1 represents a number.

Which two distinct configurations ensure that a user provides a valid postal code? (Choose Two)
A . Configure a drop-down control to select the postal code based on the specified city and province.
B . Configure the postal code field as a text property with a required input field.
C . Configure a validate rule to test that the entered postal code conforms to the required pattern.
D . Configure an edit validate rule to test that the entered postal code conforms to the required partem.

Answer: B, D