Please choose the correct answer to the question: What is an example of the fact that crop rotation renews the soil?

Answer1: planting rows of carrots and peas next to one another Answer2: planting peas one season then carrots the next Answer3: planting a field of corn with different types in it Answer4: tilling the soil in between crops

Answer format: answer1/answer2/answer3/answer4
Answer: answer2