Which of the following statements are true of Snowflake data loading? Choose 3 answers

Which of the following statements are true of Snowflake data loading? Choose 3 answers
A . VARIANT "nut" values are not the same as SQL Null values
B . It is recommended to do frequent, single row DMLS
C . It is recommended to validate the data before loading into the Snowflake target table
D . It is recommended to use staging tables to manage MERGE statements

Answer: A,C,D