A DSLAM is a device used by Internet Service Providers (ISPs) to route incoming DSL connections to the Internet. What is its correct full form ?

A DSLAM is a device used by Internet Service Providers (ISPs) to route incoming DSL connections to the Internet. What is its correct full form ?
[A]Digital Subscriber Line Access Multiplexer
[B]Digital Subscriber Line Access Multiplier
[C]Digital Service Line Access Multiplexer
[D]None of these
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