The correct answer is B. The deployed permission set will only contain changes related to the change set.

When permission sets are included in change sets, the deployment carries permission settings related to the components included in the change set. The existing permission set in production is not completely overwritten as a whole object, and field-level security changes can be included when the relevant fields are part of the deployment. Salesforce documents permission sets and profile settings as access settings that can be included with change sets.

A is incorrect because the whole permission set is not simply wiped and replaced.

C is incorrect because field-level security can be deployed when included properly.

D is close in plain language, but the more accurate exam answer is that the deployed permission set contains only changes related to the change set.

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