visual basic The error message

Index or primary key cannot contain a Null Value.

will be generated by attempting which of the following?

$($Assume you are using table 'Countries' in the Megacities database.$)$

Group of answer choices

A user tries to request a joined table using LINQ.

A user tries to add a record to a table that is related to the Countries table, and that record contains a foreign key value that does NOT correspond to a primary key value in the Countries table.

A user tries to enter a record in the table Countries with the same primary key as another record.

A user tries to enter a record in the table Countries that doesn$$t contain data in the primary key.