单选题：下列程序段运行后x的值是

下列程序段运行后x的值是 @[B](2)
```c++
int a = 0, b = 0, c = 0, x = 35;
if (!a)x--;
else if (b);
if (c)x = 3;
else x = 4;
```
A. 34
B. 4
C. 35
D. 3





A.34
B.4
C.35
D.3


答案：B