Under which of the following circumstances may 'capital gains' arise?
1. When there is an increase in the sales of a product.
2. When there is a natural increase in the value of the property owned
3. When you purchase a painting and there is a growth in its value due to increase in its popularity
Select the correct answer using the codes given below :
(a) 1 only
(b) 2 and 3 only
(c) 2 only
(d) 1, 2 and 3