In general, what should be in place before you select fields from more than one table in Access Query Design View? O a. The tables should be related in a proper one-to-many relationships. b. The tables should be merged into one table. O c. The join line between the tables should be deleted. Od. The tables should not contain fields with the same field name. The Access query design grid contains the ProductID, Product Name, and Rating fields. How can you omit the Rating field from the query results but use it to set a criterion for the query? O a. Delete the Rating field from the query design grid. b. Change the query to an update query. Oc Clear the checkmark from the Rating field's Show check box. Od. Add a second copy of the Rating field to the query design grid