Select the correct passive form of the given sentence.
The classic old invented machines hold a special place in the hearts of their hard-working inventors.
1
A special place in the hearts of the classic old invented machine hard-working inventors is held by them.
2
A special place was held by the classic old invented machines in the hearts of their hard-working inventors.
3
A special place is held by the classic old invented machines in the hearts of their hard-working inventors.
4
A special place is being held by the classic old invented machines in the hearts of their hard-working inventors.