A population of birds resides on islands A and B; these islands are not far from each other but they are far out into the ocean. Each year, a bird that lives on island A now will migrate to island B for next year with probability 0.6, and will stay on island A for next year with probability 0.4. But a bird that lives on island B now will migrate to A for next year with probability 0.1 and will stay on B next year with probability 0.9. Currently, 30% of the birds live on island A and 70% live on B. What percent will live on island A next year? (a) 19% (b) 12% (c) 40% (d) 7%