What is the way public cloud solutions introduce security risks to customers?

What is the way public cloud solutions introduce security risks to customers?
A . By law, public cloud providers are required to disclose the names and locations of their customers.
B . The shared, multi-tenant nature of the public cloud opens up additional avenues of attack.
C . It is easier to code viruses for the public cloud, making it a common starting point for hackers.
D . Public cloud providers offer zero security measures so any one can access confidential data at any time.

Answer: D