A. 1. Create a dedicated Google group in Cloud Identity.2. Add each data scientist's user account to the group.3. Assign the BigQuery jobUser role to the group.

B. 1. Create a dedicated Google group in Cloud Identity.2. Add each data scientist's user account to the group.3. Assign the BigQuery dataViewer user role to the group.

C. 1. Create an IAM entry for each data scientist's user account.2. Assign the BigQuery dataViewer user role to the group.

D. 1. Create an IAM entry for each data scientist's user account.2. Assign the BigQuery jobUser role to the group.