BTC, a Large Company with Offices Across the Country, Began

Multiple Choice

BTC, a large company with offices across the country, began an employee discussion forum on its website to allow employees to develop a sense of identity and solidarity. There were no restrictions on employee postings, to allow employees to interact freely. However, a few months later, a few employees began criticizing the company on the forum and undermining morale. BTC does not want to limit employee interaction, but at the same time, would like to limit what employees can write. Which of the following features of a discussion forum will help them achieve this?

A) anonymity
B) telepresence
C) version control
D) moderators