Multiple Choice
A "cost per inquiry" (CPI) differs from a "cost per response" (CPR) because:
A) the CPI is not indicative of the true cost of a campaign
B) the CPI tells us how much it costs to get a customer to inquire, but not to get him to buy
C) the CPR is always more expensive
D) they are essentially the same, just different terms
Correct Answer:

Verified
Correct Answer:
Verified
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