Question ID:PT89 S4 Q3 Passage:Researcher: Newly formed neurons can help to heal an injured brain but only if they develop into the type of neurons that are most common in the injured area. Studies have shown that when a part of the brain called the striatum is injured, newly formed neurons in the striatum never become midsized spiny neurons, the type most common in the striatum. Stem:If the researcher's statements are true, which one of the following must also be true? Correct Answer Choice:DChoice A:Newly formed neurons sometimes develop into midsized spiny neurons in areas of the brain other than the striatum. Choice B:Newly formed neurons are commonly found in injured areas of the brain shortly after the injury occurs. Choice C:Midsized spiny neurons are not the most common type of neuron in any part of the brain other than the striatum. Choice D:In cases of injury to the striatum, newly formed neurons will not help to heal the injury. Choice E:In most cases of brain injury, newly formed neurons do not help to heal the injury.