The sentences below have words that are missing. Choose the best option from those given below to complete the sentence.
Everyday more than 1 billion promotional messages are sent that are commercial and __________. Although __________ have used more technology to stop this, _______ find ways around it.

A

educational; firewalls; hackers

B

inescapable; governments; advertisers

C

informative; authorities; promoters

D

unsolicited; regulators; spammers