Claudia sells her highly successful hair salon in Dallas, TX to Carl. In the written sales contract, Claudia agrees to a $$covenant not to compete$$ where she agrees to never open another hair salon in the state of Texas. Which of the following best describes the covenant not to compete in Claudia and Carl$$s contract:

Group of answer choices

A$.$ Void, unless Claudia agreed to the covenant in a separate writing

B$.$ Valid, as a reasonable restraint of trade

C$.$ Unenforceable, as a violation of public policy because either the time or the geographical limitations$,$ or both, of this $$covenant not to compete$$ are unreasonable

D$.$ Valid, as the courts will not interfere where parties negotiate their deals at arms length