William Homan Thorpe FRS (1 April 1902 – 7 April 1986) was Professor of Animal Ethology at the University of Cambridge, and a significant British zoologist, ethologist and ornithologist. Together with Nikolaas Tinbergen, Patrick Bateson and Robert Hinde, Thorpe contributed to the growth and acceptance of behavioural biology in Great Britain.
Can we infer the following?
William Homan Thorpe FRS was an excellent professor

Select from:
[A]. Yes.
[B]. It's impossible to say.
[C]. No.
The answer is:
[B].