Which solution should a data architect recommend to resolve the error?

Universal Containers has a rollup summary field on account to calculate the number of contacts associated with an account. During the account load, Salesforce is throwing an "UNABLE_TO_LOCK_ROW" error.

Which solution should a data architect recommend to resolve the error?
A . Defer rollup summary field calculation during data migration.
B. Perform a batch job in serial mode and reduce the batch size.
C. Perform a batch jobin parallel mode and reduce the batch size.
D. Leverage Data Loader’s platform API to load data.

View Answer

Answer: A