Which of the following method declarations correctly defines a method with a variable length parameter list?

a)```
public int average(int[] list)
```
b)```
public int average(int ... list)
```
c)```
public int average(...)
```
d)```
public int average(int a, int b, int c, ...)
```
e)```
public int average(integers)
```

b)```
public int average(int ... list)
```