**Core Concept**
The medulla oblongata, a part of the brainstem, receives its blood supply from branches of the vertebral and basilar arteries. These arteries are critical for maintaining cerebral blood flow and oxygenation to the brain.

**Why the Correct Answer is Right**
The medulla receives its blood supply from the anterior spinal artery (a branch of the vertebral artery), the posterior spinal artery (also a branch of the vertebral artery), and the anterior inferior cerebellar arteries (AICA) and the superior cerebellar arteries (SCA) via the basilar artery. However, it does not receive blood supply directly from the posterior inferior cerebellar arteries (PICA).

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not provided, but if it were a correct artery, it would be listed as an exception.
**Option B:** This option is not provided, but if it were a correct artery, it would be listed as an exception.
**Option C:** This option is not provided, but if it were a correct artery, it would be listed as an exception.
**Option D:** This option is not provided, but if it were a correct artery, it would be listed as an exception.

**Clinical Pearl / High-Yield Fact**
The medulla's blood supply is vulnerable to occlusion, which can lead to devastating consequences such as paralysis, respiratory failure, and even death. It is essential for neurosurgeons and anesthesiologists to be aware of the medulla's anatomy and blood supply to avoid complications during surgical procedures.

**Correct Answer:** D