An AI scheduling agent needs calendar and email access for all executives. The vendor requests a single privileged service account to simplify deployment before next month's rollout deadline. As the IAM lead, what is the MOST appropriate action?
A. Approve the account with session recording enabled
B. Issue scoped non-human identities per function with credential rotation
C. Delay rollout until the vendor supports federated authentication
D. Grant access but restrict it to business hours only