Nil Fyodorovich Filatov (Russian: Нил Фёдорович Филатов , 2 June [O.S. 21 May] 1847 , or 16 April [O.S. 4 April] 1847 , – 8 February [O.S. 26 January] 1902 ) was a physician who is considered the founder of Russian paediatrics. His nephew Vladimir Filatov was a prominent ophthalmologist.
Can we infer the following?
Nil Fyodorovich Filatov's favorite nephew was Vladimir Filatov.

pick from the following. A. Yes B. It's impossible to say C. No
The answer is:
B.