This biopsy is obtained from an intra-axial parietal tumor of a 60 year-old man. The most likely diagnosis is:

A Choroid plexus papilloma.

B Choroid plexus carcinoma.

C Metastatic adenocarinoma from the colon.

D Metastatic adenocarcinoma from the prostate.

E Metastatic adenocarcinoma from the lung.