Select all statements that correctly describe multiplexing in the context of network communications.

Group of answer choices

Time Division Multiplexing $($or TDM$)$ divides the traffic for the virtual circuits by allocating specific time intervals for each virtual circuit$$s submission.

Using Statistical Time Division Multiplexing $($or STDM$),$ it is possible to provide different maximum speeds for different communication pathways multiplexed over the same physical circuit.

Digital Subscriber Line $($or DSL$)$ can use multiple forms of multiplexing to transmit voice and data over network circuits.

Wavelength Division Multiplexing $($or WDM$)$ can be used to provide multiple virtual circuits over a single, physical fiber optic cable.

If a physical circuit supports a maximum speed of $10$ megabits per second, and multiplexing is used on that circuit to provide $4$ independent communication pathways, the combined maximum speed of all $4$ pathways is $40$ megabits per second.