Which of the Following Statements Is True About Load Balancers

Which of the following statements is true about load balancers?

A) Load balancers are a security risk because they obfuscate the origin of connections.
B) Load balancer help to improve the availability and scalability of a service.
C) Load balancers are a single point of failure because they cannot be deployed redundantly.
D) Load balancer require access to private keys in order to be able to forward HTTPS traffic.
E) Load balancers cannot use connection content, such as HTTP cookies, to route traffic.