Which change will cause downtime for VM1?

You have an Azure subscription that contains a virtual machine named VM1. VM1 hosts a line-of-business application that is available 24 hours a day.

VM1 has one network interface and one managed disk. VM1 uses the D4s v3 size.

You plan to make the following changes to VM1:

✑ Change the size to D8s v3.

✑ Add a 500-GB managed disk.

✑ Add the Puppet Agent extension.

✑ Attach an additional network interface.

Which change will cause downtime for VM1?
A . Add a 500-GB managed disk.
B. Attach an additional network interface.
C. Add the Puppet Agent extension.
D. Change the size to D8s v3.

Answer: D

Explanation:

While resizing the VM it must be in a stopped state.

References: https://azure.microsoft.com/en-us/blog/resize-virtual-machines/