Direction: Read the extracts given below and answer the questions that follow :
One day, he invited me to his home for a meal. His wife was horrified at the idea of a Muslim boy being invited to dine in her ritually pure kitchen. She refused to serve me in her kitchen. Shivasubrahmania Iyer was not perturbed, nor did he get angry with his wife, but instead, served me with his own hands and sat down beside me to eat his meal. His wife watched us from behind the kitchen door. I wondered whether she had observed any difference in the way I ate rice, drank water or cleaned the floor after the meal. When I was leaving his house, Shivasubrahmania Iyer invited me to join him for dinner again the next weekend. Observing my hesitation, he told me not to get upset, saying, “Once you decide to change the system, such problems have to be confronted.” When I visited his house the next week, Shivasubrahmania Iyer’s wife took me inside her kitchen and served me food with her own hands.
Q. Why did Shivasubrahmania serve Kalam himself and sat with him to eat?
Correct answer is option 'A'. Can you explain this answer?