$191$ point

AI ALU takes $2$ input operands $($in the form of buses$)$ and performs various different operations between them, say add, subtract, and, xor, or$,$ and so on$.$ Say you have a $3-$bit signal used to select one of $8$ operations to be performed.

To implement this you perform each task among the operand pair. But to select the right operation you need to pick the output from the correct unit.

What device would you use to select the desired output.

A splitter$/$joiner

AROM

A Multiplexer

A Decoder

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