Exam 5V0-21.20 topic 1 question 52 discussion

Actual exam question from VMware's 5V0-21.20

Question #: 52
Topic #: 1

A customer environment includes:
✑ 4-node vSAN cluster
✑ 5 SQL servers with an OS virtual disk and database virtual disk
✑ Current policy uses the vSAN Default Storage policy
A vSAN administrator has created a new policy with fault tolerance method of Erasure Coding with Failures to tolerate equal to 1. The administrator will apply this new policy to the OS disk only.
Considering this scenario, which two statements are true? (Choose two.)

A. The policy can't be applied as there are not enough nodes to comply with the policy.
B. The object tree will have to be rebuilt when the policy is applied.
C. vSAN policies can only be applied to entire VMs.
D. This policy will require additional transitional space, until all objects are recreated.
E. The policy will result in size reduction and only will require 1.5x space instead of 2x.