Which of the following organisms have book lungs?

Both 2 and 3 

The correct answer is Option (4) – Both 2 and 3
Book lung, form of respiratory organ found in certain air-breathing arachnid arthropods (scorpions and some spiders).

Each book lung consists of a series of thin plates that are highly vascular (i.e., richly supplied with blood) and are arranged in relation to each other like the pages of a book.