John Smith, a U$.$S$.$ based businessman paid the equivalent of $$20$ to an official of the country of Murundi to expedite the overnight delivery of critical documents. When questioned, John Smith claimed this was not a bribe. The $$20$ is an example of

a grease payment.

a violation of the Foreign Corrupt Practices Act.

an under$-$the$-$table payment.

an inappropriate payment.

a bribe.