Final answer:
The maximum allowable length for a Thunderbolt copper cable is up to 3 meters.
Step-by-step explanation:
The correct answer is Option A: Up to 3 meters.
Thunderbolt is a technology that allows high-speed data transfer and video output between devices. The maximum allowable length for a Thunderbolt copper cable is typically up to 3 meters.
This limitation is due to signal degradation over longer distances. If you need to extend the length, you can use Thunderbolt optical cables, which can reach distances of up to 60 meters.