A Court Is Unlikely to Enforce the Non-Compete Agreement Kelly

A court is unlikely to enforce the non-compete agreement Kelly and Amber signed because of which of the following clauses?

A) Kelly agrees not to work for a competitor for two years.
B) Kelly agrees not to work for a competitor within a 10-mile radius of Amber's business.
C) Kelly agrees to go into a completely different line of work than Amber.
D) All of these are correct.