A woman who suffers from frequent and severe migraine headaches has had five children, all of whom have experienced, beginning between the ages of 8 and 12, stroke-like episodes compounded with exercise intolerance and lactic acidosis. The father of the children does not suffer from migraines, nor is he exercise intolerant. A target of a mutation that can explain these findings is most likely which one of the following?
Mitochondrial tRNA Cytoplasmic tRNA Cytochrome c Pyruvate dehydrogenase