Recommended database charset and collation for Drupal 7

Drupal 7.50 introduced multi-byte UTF-8 support. 

The recommended charset is: 


And the recommended collation is: 


WordPress recommends utf8mb4_unicode_ci. 

Source: In this thread there are some remarks stating that utf8mb4_unicode_ci is better at sorting than utf8mb4_general_ci. 

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