Which statement about mitochondrial DNA (mtDNA) is wrong?
A、mtDNA has a circular double helix structure.
B、Human mtDNA only contains 13 genes that encode 13 polypeptide chains.
C、mtDNA is prone to mutation, due to lack of protein protection and damage repair system.
D、mtDNA mutations can affect oxidative phosphorylation.
E、mtDNA mutation is maternal inheritance.