Refer to the exhibit.

The system administrator of mydomain.com received complaints that some messages that were
sent from sender user@somedomain.com were delayed. Message tracking data on the sender
shows that an email sample that was received was clean and properly delivered. What is the likely
cause of the intermittent delays?

A.
The remote MTA has a SenderBase Reputation Score of -1.0.

B.
The remote MTA is sending emails from RFC 1918 IP addresses.

C.
The remote MTA has activated the SUSPECTLIST sender group.

D.
The remote MTA has activated the default inbound mail policy.