[单选题]
How much pressure dorpd c3+/g6ejza ,rx/y 7b:ugjg hwhb 3c- 8/yges it take for a pump to supply a drinking fountain with 300 kPa, if the fountain is 30.0 m abovcb:/-gb hh 3gw78ju gye the pump?
A. $294 \; kPa$
B. $300 \; kPa$
C. $594 \; kPa$
D. $675 \; kPa$
