The correct option is A Differentiated cells develop embryonic undifferentiated character.
Cancer is a process of undifferentiated growth of cells forming the tumours. Cancer is abnormal growth of cells where cells adhere to the surface and become immobile. Also, the undifferentiated cells develop differentiated characters. The cancerous cells can spread to other organs and tissues and cause cancer there.
Thus, the correct answer is option (B), 'Differentiated cells develop embryonic undifferentiated character'.