Final answer:
Without a visual aid, it is impossible to specify which arrows A-E point to the anterior cerebral arteries, but these arteries supply the frontal lobes and are part of the anterior aspect of the circle of Willis.
Step-by-step explanation:
The anterior cerebral arteries are pivotal in supplying blood to the frontal lobes of the cerebrum. To identify the arrows which point to these arteries, one would need to examine a diagram displaying the circle of Willis, or the arterial circle, where these arteries are located. Given the context, we are unable to provide a definitive answer without the accompanying visual aid specifying where arrows A, B, C, D, and E are pointing.
However, we can affirm that the anterior cerebral arteries begin as branches from the internal carotid arteries and traverse forward and medially to supply the frontal lobes, forming part of the anterior portion of the arterial circle, including an anastomosis known as the anterior communicating artery.