Answer:
Option (C).
Step-by-step explanation:
Mitosis is a type of cell division, during which one parent cell divides to form two new daughter cells, which are identical to their parent cell. The new daughter cells have same type and number of chromosomes as present in parent cell.
So, the if the organism has undergone mitosis, the number of chromosomes should be similar before and after the cell division.
Thus, the correct answer is option (C).