"Boyd is a barista at SunDollars Coffeehouse. He makes terrible coffee and is often rude to customers. Boyd has been offered his dream job of being a freight train engineer and has decided to leave the coffeehouse and move to another state to take the job. From SunDollars' perspective, Boyd's turnover is both $\_\_\_\_\_\_\_\_\_\_$ and $\_\_\_\_\_\_\_\_\_\_."$

dysfunctional; avoidable

optimal; avoidable

dysfunctional; unavoidable

optimal; unavoidable