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Identify the true statements about the tag$-$based memory structures used in programmable logic

controllers $($PLCs$).$

In tag$-$based memory structures, memory locations are defined by using base tags.

Allen$-$Bradley SLC $500$ PLC uses tag$-$based memory structures for memory

addressing.

In tag$-$based memory structures, an alternate name for a tag is defined by using alias

tags.

Allen$-$Bradley ControlLogix PLC uses tag$-$based memory structures for memory

addressing.