Two friends, Devanshi and Harshit, were discussing whether prize money from lottery winnings, should be included in India's National income. Harshit was of the view that it should be included, while Devanshi did not agree with him. As their Economics teacher, guide them with correct treatment of the same with valid argument. Meera and Shahid are two classmates, who were comparing India's economic growth over the years. Meera referred to the increase in Gross Domestic Product (GDP) at current prices prevailing in market, while Sahid insisted on considering GDP after adjusting for inflation. Their debate on which of the two measures gives a true picture of people's well-being, remained inconclusive. Considering the above mentioned situation, elaborate with valid reason, which of the two variables is considered a better indicator of welfare and why ?