A tech company is upgrading its office network to accommodate the increasing number of IoT devices and to improve the overall network efficiency. The IT manager is considering whether to implement Wi$-$Fi $5$ or Wi$-$Fi $6.$

The company's network frequently experiences congestion due to a large number of devices transmitting small data packets.

Which Wi$-$Fi standard should the IT manager choose?

Wi$-$Fi $6,$ because it introduces OFDMA.

Wi$-$Fi $5,$ because it operates exclusively in the $5$ GHz band.

Wi$-$Fi $5,$ because it supports up to $8$ spatial streams.

Wi$-$Fi $6,$ because it uses the $2\mathrm{.}4$ GHz band exclusively.