Which of these sources can you not load data into BigQuery from?

Which of these sources can you not load data into BigQuery from?
A . File upload
B . Google Drive
C . Google Cloud Storage
D . Google Cloud SQL

Answer: D

Explanation:

You can load data into BigQuery from a file upload, Google Cloud Storage, Google Drive, or Google Cloud Bigtable. It is not possible to load data into BigQuery directly from Google Cloud SQL. One way to get data from Cloud SQL to BigQuery would be to export data from Cloud SQL to Cloud Storage and then load it from there.

Reference: https://cloud.google.com/bigquery/loading-data