B) nemesis
have a great day
A. but im second guessing myself hmmmmmmm......
I think this sentence is used in past but i don't what do u want?
The correct sentence is the second one "She built a high-performance CPU".
The first sentence should not contain a comma and is incorrect. The third sentence is incorrect because there shouldn't be a dash before CPU. The fourth sentence is incorrect because CPU is not written with dashes.
