What inference can you make by comparing the two sentences below?

-first sentence of paragraph two: Check to see that your number is on the registry.
-first sentence of paragraph three: You also can add your number to the registry using the same Web site or phone number (call from the number you want to register).
A) Telemarketing calls are annoying.
B) The registry can be key to ending telemarketing calls.
C) The registry must be accessed from a home computer.
D) There is a chance that telemarketers will go out of business.