Which of the following statements describes the effect of configuring mandatory Two Factor authentication (2FA) in Slack?
A . Members must have a sophisticated and complex password that is updated regularly.
B . Members must use a biometric reader to authenticate with Slack.
C . Members use single sign-on (SSO) to handle the exchange of usernames and passwords on behalf of Slack.
D . Members must submit a verification code along with their password each time they sign in.