A customer hands you a 20 bill that feels different from other bills. What should you do? Accept the bill without question. Refuse the bill immediately. Check the bill for authenticity by using a counterfeit : detection tool or marker. Ask the customer for a different form of payment.

The correct answer is **Check the bill for authenticity by using a counterfeit detection tool or marker.**<br /><br />While refusing the bill outright might seem like a quick solution, it could unnecessarily offend a customer with a genuine bill that's simply worn or unusual. Asking for a different form of payment is also premature. The best course of action is to politely and discreetly check the bill's authenticity first. If it proves to be counterfeit, *then* you can refuse it and explain why.<br />