**Core Concept**
White infarcts are a type of necrosis that occurs due to the sudden interruption of blood flow to an organ or tissue, resulting in coagulative necrosis. This is in contrast to red infarcts, which are typically seen in organs with a rich blood supply and are characterized by hemorrhage and inflammation.

**Why the Correct Answer is Right**
White infarcts can occur in various organs due to different etiologies. In the kidney, white infarcts are often seen in the setting of renal artery thrombosis or embolism, leading to ischemia and necrosis of the renal parenchyma. Similarly, in the spleen, white infarcts can occur due to splenic artery thrombosis or infarction of the splenic tissue. In the heart, white infarcts are typically seen in the setting of myocardial infarction due to occlusion of a coronary artery, leading to coagulative necrosis of the myocardium. The presence of white infarcts in these organs is a hallmark of ischemic injury and can be a diagnostic clue in clinical scenarios.

**Why Each Wrong Option is Incorrect**
**Option A:** While kidney infarcts can occur, they are not the only type of infarct seen in the kidney. Other types of infarcts, such as red infarcts, can also occur in the kidney.

**Option B:** Although spleen infarcts can occur, they are not as common as other types of spleen pathology, such as splenic rupture or splenic abscess.

**Option C:** While heart infarcts are a significant clinical concern, the term "white infarct" is not as commonly used in the context of cardiac pathology as it is in other organs.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that the type of infarct (white or red) can provide clues about the underlying etiology and pathophysiology of the injury. White infarcts are typically seen in organs with a relatively low blood supply, whereas red infarcts are more commonly seen in organs with a rich blood supply.

**✓ Correct Answer: D. All the above**