51. Which of the following statements about diseases associated with mitochondrial gene mutations and
affected electron transport chain complexes are incorrect?
(A) Leigh Syndrome causes difficulty swallowing and decreased motor abilities→only complex I
(B) Hypertrophic cardiomyopathy results in cardiac enlargement and degeneration→ only complex
III and IV
(C) Pearson Syndrome leads to sideroblastic anemia → only complex I and IV
(D) Kearns-Sayre syndrome causes ophthalmoplegia and ragged red fibers →only complex I and IV
and IV