Which of the Following Is a Difference Between the Thymus

Which of the following is a difference between the thymus and the spleen?

A) one is bilobed, and the other is bean shaped
B) one is surrounded by connective tissue, and the other is not
C) one produces hormones to hasten aging, and the other does not
D) one is located above the heart, and the other is located near the neck
E) one is the site for lymphocyte degradation, and the other is the site for lymphocyte production