Among the episode with highest votes, what is the category credited to Carlton Batten?
highest votes refers to max(votes); to Carlton Batten refers to person = 'Carlton Batten'
SELECT T2.category FROM Episode AS T1 INNER JOIN Credit AS T2 ON T1.episode_id = T2.episode_id WHERE T2.person = 'Carlton Batten' AND T2.credited = 'true' ORDER BY T1.votes DESC LIMIT 1;