Which method is best suited for this quarterly data transfer?

The TRANS_SUMMARY table contains product-wise transaction details that get updated with every transaction in the system. Each row has cumulative transaction details of a single product and every product is identified by a product code, which is the primary key.
As part of the archival process, the company wants to transfer the rows in the TRANS_SUMMARY table to the TRANS_SUMMARY_DUP table at the end of every quarter of the year. Along with existing products, the company deals with many new products during every quarter.
Which method is best suited for this quarterly data transfer?

A.
Using the correlated UPDATE command

B.
Using the INSERT command to perform bulk operation

C.
Using the MERGE command

D.
Using the SQL*Loader utility