In a competitive market, a producer is able to sell their good for $\textbackslash$ 10$ per unit, while the cost of producing each unit is $\textbackslash$ 8$. What is the producer surplus in this scenario? 
选项为:A:$\textbackslash$ 2$  B:$\textbackslash$ 8$  C:$\textbackslash$ 10$  D:$\textbackslash$ 12$  请回答其中一个选项.