The correct answer is Mucormycosis because it most commonly affects patients with diabetic ketoacidosis (DKA). The high blood sugar and acidic environment in DKA patients facilitate the growth of Mucorales fungi. These fungi exhibit angioinvasion, leading to rapid tissue necrosis, especially in the rhino-orbital-cerebral region. This unique susceptibility is not typically seen with Aspergillosis, Cryptococcosis, or Candidiasis in DKA patients.

Reference:
Feigin and Cherry's Textbook of Pediatric Infectious Diseases, Vol 1, Chapter 22, Page 805