Premier Co$.$ is currently producing $10,000$ park benches annually. A supplier has offered to produce the bench for$$ $$500$ per bench. Premier Co$.$ incurs unit$-$level costs of $$490$ per unit. Premier also spends $$50,000$ on product design each year and incurs $$100,000$ of facility$-$level costs. The avoidable production cost for Premier Co$.$ per bench is $\_$blank$\_.$

Multiple choice question.

$$490$

$$495$

$$505$

$$500$