Melas is a recently described disorder that is related to improper energy relationships within cells. which structure organelle may be faulty?

I believe the structure organelle that may be faulty is Mitochondria. Mitochondria is a cellular organelle that is involved in cellular respiration a process that uses glucose to yield water and carbon dioxide coupled with production of energy in the form of ATP. Melas meaning mitochondrial encephalomyopathy lactic acidosis and stroke-like episodes is a conditions that affects body systems especially the brain and the nervous system and muscles.

Ibelieve the answer is c. 

The  correct answer should be a waste