Data, such as digital coupons or customer complaints, exchanged between companies and consumers typically travel via _____, while off-line electronic data collection, such as bar code scanners or databases, shared internally within an organization, travel via ________.单项选择题

A
A. internet; intranet
B
B. extranet; internet
C
C. extranet; intranet
D
D. the Web; the social network
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