—I am going to Hawaii next week .—_____________ .
A:Enjoy yourself
B:Good idea
C:That's all right
D:Nothing serious
已知定义在R上的奇函数f(x)和偶函数g(x)满足f(x)+g(x)=ax-a-x+2(a>0,a≠1),若g(2)=a,则f(2)= ( )