Read the following passage carefully : The domestic product measures the value of all goods and services arising out of economic activity within a country over a specific period, while National Income is the sum total of income earned by all factors of production as a result of the economic activities during a period of time. National Income includes only those incomes which are derived directly from the current production of goods and services, which are called Factor Incomes. When National Income is measured at current prices over a number of years, the changes in National Income would include the effect of the changes in production along with the changes in prices. This estimate compared over the period would not be an accurate measure of the overall real increase in production of the country or the economic welfare of the people of the economy. Therefore, it would be necessary to eliminate the effect of prices, in other words, to recompute the whole series at given prices of one particular base year. National Income, thus computed, is termed as National Income at constant prices. On the basis of the above passage and common understanding, answer the following questions : (a) "All capital goods are producer goods, but all producer goods are not capital goods." Justify the given statement with valid arguments. (b) Distinguish between Domestic Income and National Income.