Consider the following method:

public void dosomething$($int$[]$ a$)$

$\{$

$a[2]=a[1]$

$a[3]=a[2]$;

$\}$

If $a$ is declared as

int $[]a=\{1,2,3,4\}$;

what are the values in a after dosomething $(a)$ is called?

A$.,1,2,3,4$

B$.,1,1,2,4$

f$.1,2,2,3$

O$.1,2,2,2$