Exam NSE8_812 topic 1 question 12 discussion

A retail customer with a FortiADC HA cluster load balancing five webservers in L7 Full NAT mode is receiving reports of users not able to access their website during a sale event. But for clients that were able to connect, the website works fine.
CPU usage on the FortiADC and the web servers is low, application and database servers are still able to handle more traffic, and the bandwidth utilization is under 30%.
Which two options can resolve this situation? (Choose two.)