I don't think number two is a viable option as of now for the PC market. There needs to be a comparable Chinese domestic alternative. A few years ago, the experts in the industry stated the time frame of having a comparable PC cpu around 2030. This time frame might have to be hastened now.Couple effects
1)Still too many Chinese companies slow to adopt domestic tech. Banning US tech will fasten the adoption of domestic tech
2)To get even, take away Chinese market, half of US semiconductor tech companies will die.
For mobile phones it is becoming increasingly viable but China needs to first vertically integrate its entire supply chain to prevent US applying measures against China's semiconductor industry as retaliation. For some industrial semiconductors it is viable, I think China can force a transition.
The key for China would be to adopt domestic technology without sacrificing too much productivity and competitiveness.