Which of the following statements about web caching are true? (Choose two.)
A. Web caching slows down web browsing due to constant read-write cycles from FortiGate memory.
B. When a client makes a web request, the proxy checks if the requested URL is already in memory.
C. Only heavy content is cached, for example, videos, images, audio and so on.
D. Web caching is supported in both explicit and implicit proxy.