The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 64-year-old man presents with severe respiratory distress. This has onset over the past 3 weeks, progressively worsening. Past history involves congestive heart failure (CHF). Due to concerns of concurrent pneumonia, sputum studies are ordered. Microscopic examination of his sputum demonstrates heart failure cells (hemosiderin-containing macrophages). Which of the following cellular organelles is significant in the formation of these cells?   (A) Endoplasmic reticulum (ER)   (B) Ribosomes   (C) Lysosomes   (D) Mitochondria
['(C) Lysosomes <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Endoplasmic reticulum (ER) \n (B) Ribosomes \n (C) Lysosomes \n (D) Mitochondria <> possible answers', '  A 64-year-old man presents with severe respiratory distress. This has onset over the past 3 weeks, progressively worsening. Past history involves congestive heart failure (CHF). Due to concerns of concurrent pneumonia, sputum studies are ordered. Microscopic examination of his sputum demonstrates heart failure cells (hemosiderin-containing macrophages). Which of the following cellular organelles is significant in the formation of these cells? <> context@']