Answer:
D) Multiple reimbursement
Step-by-step explanation:
A multiple reimbursement scheme happens when an employee submits a reimbursement request for the same expense more than once. Generally different types of supporting documentation is presented every time, e.g. one time they might present an invoice, on another time they might present a confirmation email, etc.
In this case, Charlene is requesting a second reimbursement for an expense that already has been reimbursed.