Answer:
The correct option is A) The four cells have identical DNA sequences
Explanation:
All the cells present in an organism have the same genome. The difference in cell structure and function occurs because some the genes which are active in one type of cell may not be active in other types of cells. Hence, option A is correct.
Other options like option B is false because having a long structure doesn't mean that those cells will have longer DNA. The DNA present in all the cells of a person is the same.