If a client is shown the "Cadillac" version of a cost-estimate, which of the
following is true about that version?
A. It is the cheapest.
B. Cost is not factored in.
C. It is the most expensive.
D. All the bids have come in.
Help pls

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.