Customers of which of the following cloud-based solutions should be MOST concerned about this vulnerability?

A vulnerability was recently announced that allows a malicious user to gain root privileges on other virtual machines running within the same hardware cluster.

Customers of which of the following cloud-based solutions should be MOST concerned about this vulnerability?
A . Single-tenant private cloud
B . Multitenant SaaS cloud
C . Single-tenant hybrid cloud
D . Multitenant IaaS cloud
E . Multitenant PaaS cloud
F . Single-tenant public cloud

Answer: E