The correct answer is C, as the IAM section in the GCP Console is the appropriate area to view permissions assigned to a custom role within a specific project. Refer to the GCP documentation on IAM Custom Roles for more details. Option A is incorrect because the API section does not display this information. Option B is wrong since the gcloud init command does not provide the required details. Option D is also incorrect as the Security section is not the right place to find this information.