单选题：以下代码的执行结果是( ) 。

以下代码的执行结果是( ) 。

```
a={i for i in range(1,10)}
b={i for i in range(12) if i%2==1 }
print(a-b)
```
@[D](2)

A. {2, 4, 6, 8, 11}
B. {1, 2, 3, 4, 5, 6, 7, 8, 9, 11}
C. {1, 3, 5, 7, 9}
D. {2, 4, 6, 8}



A. {2, 4, 6, 8, 11}
B. {1, 2, 3, 4, 5, 6, 7, 8, 9, 11}
C. {1, 3, 5, 7, 9}
D.{2, 4, 6, 8}


答案：D