The figure shows the amount of water in 3 beakers at first. Karan poured 150 mL of water from beaker P to beaker Q. He then poured 200 mL of water from beaker Q to beaker R. Finally, he poured 100 mL of water from beaker R to beaker P. Which one of the following statements is true?
ABeaker P contained more water than the other beakers at the end.
BBeaker Q contained more water than the other beakers at the end.
CBeaker R contained more water than the other beakers at the end.
DThe three beakers contained the same amount of water at the end.