What are two consequences of this change?

Northern Trail Outfitters (NTO) is launching a new campaign, driving it to redesign its data structure. NTO needs to change the cardinality between two data extensions inside Contact Builder.

What are two consequences of this change? Choose 2 Answers
A . All filters created before will adapt automatically to the new cardinality.
B. All scheduled sends using a filter based on one of the data extensions should be reviewed.
C. A contact may NOT show up in the filter based on one of the data extensions.
D. One of the data extensions must be deleted from the attribute group in order to change the cardinality.

Answer: B,C