An Internet company purchased a batch of TaiShan servers to build a Web system. It is now planned to provide web front-end load balancing function. Which of the following software can provide web front-end load balancing function? (Multiple choice)

An Internet company purchased a batch of TaiShan servers to build a Web system. It is now planned to provide web front-end load balancing function. Which of the following software can provide web front-end load balancing function? (Multiple choice)
A . Memcached
B . Nginx
C . HAProxy
D . LVS

Answer: BCD