The correct option is D All of the above.
Goodwill is the value of reputation of a firm in respect of profits expected in future over and above the normal rate of profits. The implication of the term over and above is that there is always a certain normal rate of profits earned by similar firms in the same locality. The excess profit earned by a firm due to its location advantage, Efficiency of business, Risk involved in business, better customer service, possession of a unique patent right, personal reputation of the partner or for similar other reasons.