A customer wants to move their sensitive workloads to a Compute Engine-based cluster using Managed Instance Groups (MIGs). The jobs are bursty and must be completed quickly. They have a requirement to be able to manage and rotate the encryption keys. Which boot disk encryption solution should you use on the cluster to meet this customer`s requirements? 

Answer options:

A. Customer-supplied encryption keys (CSEK)
B. Customer-managed encryption keys (CMEK) using Cloud Key Management Service (KMS)
C. Encryption by default
D. Pre-encrypting files before transferring to Google Cloud Platform (GCP) for analysis

B

Reference - https://cloud.google.com/kubernetes-engine/docs/how-to/dynamic-provisioning-cmek