A. For the primary key of the table, specify the unique identifier as the partition key and specify the email address as the sort key.
B. For the primary key of the table, specify the unique identifier as the partition key. Create a local secondary index (LSI) based on the email address.
C. For the primary key of the table, specify the email address as the partition key and specify the unique identifier as the sort key.
D. For the primary key of the table, specify the unique identifier as the partition key. Create a global secondary index (GSI) based on the email address.

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