Assume there are four families in a locality. If the income of each family is $₹ 6,000, ₹ 4,000$, $₹ 7,000$ and $₹ 3,000$ then find out the average income of the locality from the following options:(a) ₹5,000(c) $₹ 2,000$(b) ₹3,000(d) $₹ 6,000$