Cancer is a disease in which cells divide rapidly and improperly. Which of the following events is often the cause of cancer?
OA. The immune system begins to attack normal, healthy cells of the body.
O B. Homeostasis fails in the blood, allowing acid levels to increase above normal tolerances.
OC. A nondisjunction error occurs during meiosis, causing cells to appear with an abnormal number of chromosomes.
OD. A mutation changes the regulation of the cell cycle in certain cells or tissues.