All the following tissues in mammals, except one, consists of a central ‘medullary’ region surrounded by a cortical region. Mark the wrong entry:

1. ovary

2. adrenal

3.  liver

4.  kidney

(c) Liver, the largest gland of body surrounded by the abdominal cavity, is the only organs from the above mentioned options that does not consist of a central ‘medullary’ region, surrounded by a cortical region.
Rest three options, i.e., Ovary, adrenal and kidney bear a prominent ‘medullary and cortical region,'