A customer showing signs of intoxication was refused the sale of alcohol by a cashier. Twenty minutes later, the cashier

[correctanswer]

A customer showing signs of intoxication was refused the sale of
alcohol by a cashier. Twenty minutes later, the cashier notices the
same customer trying to purchase alcohol at another check-out. What
should the cashier do?
Call the police.
Nothing, the cashier is not responsible for sales at other
check-outs.
Loudly call out to her colleague that the customer is
intoxicated.
Discreetly tell her colleague that a purchase was previously
denied due to this customer showing signs of intoxication.