Name three challenges that Forrester interviewees faced when trying to manage Kubernetes and clusters. $($Choose three$)$

Subscription costs for fully supported commercial$-$grade Rancher presented an untenable cost profile

Developers can't easily get containers into production

Developers have to rely on admins to set up clusters, hindering innovation and development velocity

Manual processes bogged down platform architects during new project setup

Cloud$-$native workloads were exposed to unauthorized access due to a lack of RBAC and security policies

They were only just starting to invest in containers$--$adoption is costly and difficult