Host pool is a component of Azure Virtual Desktop that represents a collection of Azure VMs that work as session hosts for AVD (Azure Virtual Desktop).Which of the following is/are a valid type of Host pool?

Answer options:

A.Personal
B.Professional
C.Pooled
D.Unpooled
E.Sparked

Correct Answers: A and C 
Pooled and Personal are two different types of host pools.A pooled host pool can be configured where multiple users sign in and share a Virtual Machine. On the other hand, in a personal host pool, each user has a dedicated Virtual Machine.
Option A is correct. A personal Host pool is a type of host pool where each user has a dedicated Virtual Machine and he is generally a local administrator for a dedicated VM.
Option B is incorrect. There is no such type of host pool.
Option C is correct. A pooled host pool can be configured where multiple users sign in and share a Virtual Machine. Generally, out of these users, no one is a local administrator for the pooled Virtual Machine.
Option D is incorrect. Unpooled is not the right type for the host pool.
Option E is incorrect. Sparked is not a valid type of host pool.
Reference: 
To know more about Azure virtual desktop deployment, please visit the below-given link: 

https://docs.microsoft.com/en-us/learn/modules/m365-deploy-wvd/2-deployment-overview