What should you avoid when importing custom tables? Note: There are 2 correct answers to this question.

What should you avoid when importing custom tables? Note: There are 2 correct answers to this question.
A . Using hyphens and spaces in table content
B . Using hyphens and spaces in custom table name
C . Using hyphens and spaces in column names
D . Using hyphens and spaces in the name of the imported file

Answer: B,C