It might be said that Sergei´s reaction towards Yoni at his door might be option D. he might have been frightened because Yoni could discover the gold fish. so his reaction was kind of harsh, he did not what to answer the questions and he wanted the boy to go away from his house.
In 'The Portrait of a Lady' by Khushwant Singh, the narrator depicts his grandmother as someone that displays immeasurable love and selflessness.
She spends her life by taking care of the narrator during his youth and even though he grows and keeps his distance, she remains loving and letting him pursue his interests.
The narrator has a great feeling of respect for his grandmother and though she is not physically beautiful, he describes her inner beauty by comparing her to the purity of nature. The narrator also remarks that she was a lady to the last.