Какое из этих предложений при переводе на российский язык будет безличным?

1. a) Its raining. Идет дождик.
2. b) Its my car. Это моя машина.
3. c) Its cold outside. На улице холодно.
4. d) Its not known. Это не знаменито.

Negative.

1. a) Its not raining.
2. b) Its not my car.
3. c) Its not cold outside.
4. d) Its not known.

Interrogative.

1. a) Is it raining?
2. b) Is it my car?
3. c) Is it cold outside?
4. d) Is it not known?