I would like to help but you would have to include paragraph 6 In order to answer the question
Signet, in Hungarian Transylvania
I would say C because its important you site what ever info your getting from the internet. Yes, the rest of the answers are to consider, but siting sources comes first.
Based on the etymology of the word "surly", I can say that it illustrates PEJORATION instead of amelioration. It illustrates pejoration since its definition has become more negative in time. In contrast, amelioration is a type of semantic change wherein the meaning of the word becomes more positive. Hope this answers your question.