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Your supplier needs to upload a purchase order to a cloud storage bucket within the next 4 hours without having a Google account. Following Google's recommended practices, what should you do?
A
Create a JSON key for the Default Compute Engine Service Account and execute the command gsutil signurl -m PUT -d 4h gs:///**.**
B
Create a service account with upload permissions to the bucket, a JSON key for it, and execute gsutil signurl -httpMethod PUT -d 4h gs:///**.**
C
Create a service account with upload permissions to the bucket, a JSON key for it, and execute gsutil signurl -d 4h gs:///.
D
Create a service account with upload permissions to the bucket, a JSON key for it, and execute gsutil signurl -m PUT -d 4h gs:///po.pdf.