Main Cellular wastes are CO2 and Ammonia
For waste removal of cells ; there are many organs and in this question they are A , C, G , F !!
A. Circulatory system : Transport all waste
C. Excretory system: Removes Urea, and other wastes .
G . Urinary bladder is under excretory system as it stores the waste
F. Respiratory system is one of important organs that transport waste out of body as CO2 !! CO2 is a cellular waste amd thus F is also right !!
If you have any doubt ; comment !!