Mia has purchased an Internet package for three months, in which she can use 30 mbps Internet speed. However, for the service, she needs to pay a fee of $50 in advance irrespective of whether she uses the Internet during the service period or not. This arrangement best illustrates the _____ strategy.
A. razor-razor-blade
B. subscription-based
C. pay-as-you-go
D. freemium
Answer: subscription-based