About question in Kubernetes section, Replication Controllers and Replicasets

[joseph.john]

Dear All,
Good evening,
the url refereed is

Deployments

pasting the needed contents here

.spec.strategy specifies the strategy used to replace old Pods by new ones. .spec.strategy.type can be “Recreate” or “RollingUpdate”. “RollingUpdate” is the default value.

Now the question is that question is that

If .spec.strategy.type is set to RollingUpdate, then all new PODs are created first and then all existing pods are killed at once. True or False
screen shot attached from the portal for reference

Now please check and say which is the correct answer

[joseph.john]

Thanks I got the explanation
If .spec.strategy.type is set to RollingUpdate

a secondary ReplicaSet is created with the new version of the application, then the number of replicas of the old version is decreased and the new version is increased until the correct number of replicas is reached.

Question is asking about all the instance getting killed, the answer is False, why
the replicas of old instance is decreased, not killed all of suddent