Identify which control activity is violated in each of the following situations.

1.		Once a month, the sales department sends sales invoices to the accounting department to be recorded.		Documentation proceduresIndependent internal verificationPhysical controlsEstablishment of responsibilitySegregation of dutiesHuman resource controls
2.		Nick Sewell orders merchandise for Silo Company; he also receives merchandise and authorizes payment for merchandise.		Establishment of responsibilitySegregation of dutiesPhysical controlsHuman resource controlsDocumentation proceduresIndependent internal verification
3.		Several clerks at Guillens Groceries use the same cash register drawer.		Independent internal verificationEstablishment of responsibilitySegregation of dutiesHuman resource controlsDocumentation proceduresPhysical controls