Mumby and His Colleagues Showed That Large Hippocampal Lesions Blocked

Mumby and his colleagues showed that large hippocampal lesions blocked the object-recognition deficits caused in rats by cerebral ischemia when the lesions were

A) unilateral but not bilateral.
B) contralateral but not ipsilateral.
C) made 1 hour, but not 1 week, after the ischemia.
D) ipsilateral but not contralateral.
E) made 1 week, but not 1 hour, after ischemia.