Answer: A. Dr. Kenny tells Rukmani that his wife has left him.
In Chapter 18 of Nectar in a Sieve, Rukmani find out that Dr. Kenny has come back. She is excited to see him, and pays him a visit. Although it takes them a little while, the two eventually start talking like in the old times. Rukmani tells him her news, while he tells her his. He tells her that his wife has left him, and that his sons have forgotten him.