What is the number of trees planted in the field in rows and columns?

I. Number of columns is more than the number of rows by 4.

II. Number of trees in each column is an even number.

If the data in Statement I alone are sufficient to answer the question, while the data in Statement II alone are not sufficient to answer the question.

If the data in Statement II alone are sufficient to answer the question, while the data in Statement I alone are not sufficient to answer the question.

If the data in Statement I alone or in Statement II alone are sufficient to answer the question.

If the data in both the Statements I and II are not sufficient to answer the question.

If the data in both the Statements I and II together are necessary to answer the question.