External data can be useful because: A. It is the most expensive to obtain B. It is the cheapest to obtain C. It is most reliable D. It is the most current

External data can be useful because:
A. It is the most expensive to obtain
B. It is the cheapest to obtain
C. It is most reliable
D. It is the most current
by

1 Answer

Answer :

B. It is the cheapest to obtain
by

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