A customer complains of receiving malicious E-mails several times from the same user a day what should you ask the customer

When was the last time an antivirus signature was updated
Have there been any strange emails received in the last few weeks
When was the last time the hard drive was the defragmented
Which of the following is the best answer

Have you clicked on any suspicious links or opened any suspicious attachments in these emails?

When was the last time an antivirus signature was updated