Select the correct passive voice of the given sentence.
The plumber has not yet fixed the leakage in the tap.
1
The leakage in the tap has not yet fixed the plumber.
2
The leakage in the tap had not yet been fixed by the plumber.
3
The leakage in the tap have not yet been fixed by the plumber.
4
The leakage in the tap has not yet been fixed by the plumber.