Quantity I : Pipes A and B individually can fill the empty tank in 20 hours and 25 hours respectively. Pipe C alone can empty the full tank in 40 hours. Pipe A is opened at the start and after 5 hours pipe B is also opened. After 4 more hours pipe C is also opened. In how many hours the tank is filled completely? Quantity II : A and B together can do a piece of work in 6 hours. A is 50% more efficient than B. In how many hours, A alone can complete the work?

• A. Quantity : I > Quantity : II
• B. Quantity : I ≥ Quantity : II
• C. Quantity : I < Quantity : II
• D. Quantity : II ≥ Quantity : I
• E. Quantity I = Quantity II or relation can't be established