Which four tiles are required to assemble this Journey?

As a marketing automation consultant, you are creating a Customer Journey for a Marketing Event.

You would like to send an email inviting VIP customers to register. For customers who do not register you want to send a follow-up email one (1) week later reminding them to register.

Which four tiles are required to assemble this Journey? Each correct answer presents part of the solution.
A . Audience
B . If Registered
C . Phone Call
D . Create Lead
E . Wait for
F . Send an Email

Answer: A,B,E,F

Explanation:

Reference: https://docs.microsoft.com/en-us/dynamics365/marketing/create-simple-customer-journey