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