How do you name the step where the agent investigates the claim for fraud?

Consider the following scenario:

A customer files a fraud complaint. The complaint is investigated by a customer service agent.

• The customer service agent may request additional information from the customer.

• The merchant is notified and given 15 days to dispute the fraud claim.

• If the fraud claim is approved, an affidavit is sent to the customer and a refund is posted to their account.

How do you name the step where the agent investigates the claim for fraud?
A . Investigate Fraud
B . Claim Investigation
C . Investigate Claim
D . Fraud Claim