The correct option is A affectionate concern
There isn't any kind of sarcasm, apathy or jealousy in Rose's tone. He is worried about Troy, and admires him. But his concern for the latter foregoes his admiration for his persona. There is worry in his tone. Thus, option A, affectionate concern, is the correct answer. He is an old friend, and Rose loves him, but at this time, it is concern that is the dominant emotion regarding his friend. Hence, options B,C,D and E are incorrect.