4. What is the difference between cytology and histology? O A. Cytology is the study of the normal functioning of tissues, while histology is the study of
the abnormal functioning of tissues
O B. Cytology is the study of tissues, while histology is the study of cells.
O C. Cytology is the study of cells, while histology is the study of tissues.
O D. Cytology is the study of the normal functioning of cells, while histology is the study of the
abnormal functioning of cells.