To Which of the Following Does the Term Heteroplasmy Refer

To which of the following does the term heteroplasmy refer?

A) cells with a variable mixture of normal and abnormal organelles
B) heterozygous individuals with more than one gene pair involved
C) conditions in which the germ plasm is a mixture of dominant and recessive genes
D) a circumstance that is homologous to incomplete dominance
E) various stages of development of mitochondria and chloroplasts