What is the most likely cause of the missing log lines?

You have an application hosted on a Compute Engine virtual machine instance that cannot communicate with a resource outside of its subnet. When you review the flow and firewall logs, you do not see any denied traffic listed.

During troubleshooting you find:

• Flow logs are enabled for the VPC subnet, and all firewall rules are set to log.

• The subnetwork logs are not excluded from Stackdriver.

• The instance that is hosting the application can communicate outside the subnet.

• Other instances within the subnet can communicate outside the subnet.

• The external resource initiates communication.

What is the most likely cause of the missing log lines?
A . The traffic is matching the expected ingress rule.
B . The traffic is matching the expected egress rule.
C . The traffic is not matching the expected ingress rule.
D . The traffic is not matching the expected egress rule.