What is a significant challenge Nvidia faces in maintaining its dominance in the Al chip market, according to The Verge article?

A$.$ Tech companies are producing their own superior chips.

B$.$ Nvidia faces supply chain issues that hinder its ability to produce enough chips to meet market demand.

C$.$ Nvidia's software is becoming outdated due to lack of updates, making competitor products more appealing.

D$.$ Tech companies are developing open$-$source software to prevent developers from being locked into the Nvidia ecosystem.