Which of the following elements apply to Invoice Adjustments?

An Invoice Adjustment must always be a taxable item.

Invoice Adjustments are not selectable by Suppliers.

Invoice Adjustments can be grouped together via Invoice Adjustment Groups.

Invoice Adjustments can be either a credit or a debit item to be added to an Invoice.

A company's workers have set schedules of 8 hours a day and 40 hours a week. The Worker will need to be paid overtime for any hours worked over 40 in a week.