Why do PodDisruptionBudgets take effect during a kubectl drain?

Question

Accepted Answer

C. Because drain uses the eviction API where the server supports it — Evictions are policy-checked and consult disruption budgets; drain falls back to a plain delete where eviction is unsupported, and a plain delete does not check budgets.

Answer

Because drain deletes Pods, and deletion checks budgets

Answer

Because drain cordons the node first

Answer

Because drain runs the Pods' preStop hooks