Each year red-winged blackbirds stop in a certain region of Midland Province on their spring and fall migrations. In the fall, they eat a significant portion of the province's sunflower crop. This year Midland farmers sought permits to set out small amounts of poisoned rice during the blackbirds' spring stop in order to reduce the fall blackbird population. Some residents voiced concern that the rice could threaten certain species of rare migratory birds. Nevertheless, the wildlife agency approved the permits.Which of the following, if true, most helps to justify the wildlife agency's approval of the permits, given the concerns voiced by some residents?
【选项】Since rice is not raised in Midland Province, few species of birds native to the province normally eat rice.