Given a Union transformation with 2 input groups, which statement is correct and true?
A . Both input groups must have matching ports. The precision, datatype, and scale must be identical across both input groups.
B . Either input group can have a port that does not match the other input group. The precision, datatype, and scale does not have to be identical across both input groups.
C . When merging the 2 groups of data together, the Union transformation will remove duplicate rows.
D . The port names in each input group can be named the same.
Answer: A